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Aktiv Chemistry is a comprehensive online homework platform that helps students build mastery of chemistry. Take advantage of over 15,000 built-in chemistry problems, scaffolded practice, a powerful instructor dashboard, LMS grade syncing, and much more.

All-in-one platform

Comprehensive learning & assessment.

From in-class active learning, homework assignments, and now secure online quizzes and exams, Aktiv Chemistry’s all-in-one platform provides a comprehensive set of features for formative and summative assessments.

In-class or Synchronous Online

Take attendance, post polls & quizzes, enhance traditional worksheets, or promote think-pair-share activities. Learn More

Assign interactive problem sets with instant feedback and automatic grading that sync with institutional LMS gradebooks.

Timed Online Quizzes & Exams

Create summative assessments with question pools, algorithmic problems, and optional integrated proctoring. Learn More

15,000 PROBLEMS OR WRITE YOUR OWN

Extensive content library.

Building engaging classroom activities has never been easier. Aktiv Chemistry provides an extensive library of questions for chemistry courses such as General Chemistry, Introductory Chemistry, GOB Chemistry, Organic Chemistry. The content library includes discipline-specific problem types such as molecule drawing, chemical equations and naming, dimensional analysis, numerical entry, and more.

Easy and flexible authoring also allows instructors to add their own questions.

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Draw the Lewis structure of (CHO)OCH₃ and then choose the appropriate set of molecular geometries of the three central atoms. Your answer choice is independent of the orientation of your drawn structure.

The solubility of He in water at 25.0 °C is 7.0 × 10⁻⁵ M when the partial pressure of He is 0.20 atm. What is the value of the Henry's law constant for He ?

• monosaccharide
• oligosaccharide
• monopolysaccharide
• heteropolysaccharide
• homopolysaccharide

According to the balanced reaction below, calculate the moles of NH₃ that form when 4.2 mol of N₂H₄ completely reacts 3 N₂H₄(l) → 4 NH₃(g) + N₂(g)

AFFORDABLE & FLEXIBLE

Built to work with any textbook.

Aktiv Chemistry ’s textbook independent approach means instructors have more flexibility for their courses. Build assignments that align to any major publisher textbook or increasingly popular OER options.

For General Chemistry courses, Aktiv Chemistry also offers seamless integration with the OpenStax Chemistry textbooks.

Student Success

More chemistry, less technology.

Drawing chemical structures, entering subscripts and superscripts, and working with significant figures just shouldn’t be hard. That’s why  Aktiv Chemistry  was designed from the ground up with the student experience in mind. With intuitive user interfaces and scaffolded and visual modules, our goal is to use technology to lower the barrier to chemistry.

Bring Your Own Device. Any Device.

Students and instructors can access the  Aktiv Learning  app from any iPhone, iPad, or Android Device. Additionally, the platform is fully accessible on Web with any Mac, PC, or Chromebook.

Aktiv Chemistry ’s mobile-first design ensures that students receive the same experience no matter where they are. Students take advantage of the  Aktiv Learning  mobile app to work and study on-the-go in places like riding the bus or train, or even on campus when they have downtime.

RANDOMIZATION WITH

Algorithmic problems & question pools.

Aktiv Chemistry offers additional security with both Question Pools and Algorithmic Problems. These features randomize the content that is delivered to each student during homeworks, quizzes, or exams. Instructors can also randomize the order of questions on any assignment.

Built-in variables create thousands of question variants to be delivered that randomize numbers, words, or compounds within the problem statement.

Group together a set of similar questions and deliver a subset of them at random to students.

Problem Pool 1

14 problems in this pool

• Problems to Assign

What is the correct IUPAC name for HBrO(aq)?

What is the correct IUPAC name for Ca(BrO₂)₂?

What is the correct IUPAC name for Ti(ClO₄)₄?

Success Story

Professors from over 700 colleges and universities use Aktiv Chemistry  to engage students inside and outside of the classroom. Learn how some of them have transformed their courses.

Helping Students Learn, Interact, and Visualize Chemistry in New Ways

¹ This quote was provided at a time where Aktiv Chemistry was named Chem101. We have replaced the use of Chem101 in any direct quotes with Aktiv Chemistry to minimize confusion.

DESIGNED TO

Support your course, flexible grading policies.

Every Aktiv Chemistry activity has a multitude of grading policies that can be customized depending on the assignment type. Settings include points per problem, participation credit, late submissions with penalties, variable attempts per problem, penalties for incorrect attempts, and more. The Aktiv Chemistry gradebook can be set up to display summary columns or individual columns depending on the assignment type as well.

Industry-leading Support

Any course using Aktiv Chemistry comes with our industry-leading support featuring average response times of 14 minutes and extended hours that include late nights and weekends. Additionally, every Aktiv Chemistry instructor works with an individual member of our Success team that helps with initial course set up, gradebook/LMS integrations, and recommendations for best practices.

LMS Integrated

Aktiv Chemistry’s gradebook can be synced with any popular campus LMS such as Canvas, Blackboard, Moodle, or D2L. The gradebook and associated columns can be customized to separate the various assignment types, to present individual assignments, or display summary columns for each type.

Speak to a Specialist

One of our Learning Specialists will give you a tour of the Aktiv Chemistry or Aktiv Mathematics learning  platforms and provide a free instructor playground account with access to the content library.

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• Anne Helmenstine Biography
• Free Printable Periodic Tables (PDF and PNG)
• Periodic Table Wallpapers
• Interactive Periodic Table
• Periodic Table Posters
• How to Grow Crystals
• Chemistry Projects
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• Holiday Science
• Chemistry Problems With Answers
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Chemistry Worksheets

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• My Amazon Books

Chemistry Worksheets and Handouts (PDF for Printing)

This is a collection of free chemistry worksheets and handouts to print. Most of the printables are PDF files, although some are available as JPG or PNG files. All of these worksheets print cleanly on normal printer paper, plus you can resize them to fit your needs.

Here is a list of worksheets. This site also has articles explaining these topics in detail.

• Label Parts of the Atom [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Acid formulas [ PDF ][ Answers ]
• Balancing equations Worksheet #1 [ PDF ][ Answers ] Worksheet #2 [ PDF ][ Answers ] Worksheet #3 [ PDF ][ Answers ] Worksheet #4 [ PDF ][ Answers ]
• Chemical and Physical Changes [ PDF ][ Answers ]
• Chemistry scavenger hunt [ PDF clues ][ Answers ]
• Element names crossword [ PDF ][ Answers ]
• Element symbols – Symbols that make words [ PDF worksheet ][ Answers ]
• Element symbols – Countries of the world [ PDF ][ Answers ]
• More element symbol worksheets
• Homogeneous or Heterogeneous Mixtures [ PDF ][ Answers ]
• Intensive and Extensive Properties [ Worksheet ][ Answer Key ]
• Intrinsic and Extrinsic Properties [ PDF ][ Answers ]
• Ionic and Covalent Compounds (Names and Identification) [ PDF Worksheet ][ Answer Key ]
• Ionic Compound Names and Formulas [ PDF Worksheet ][ Answer Key ]
• Metric to English Unit Conversions [ PDF Worksheet ][ Answer Key ]
• Mixtures [ PDF ][ Answers ]
• Periodic table scavenger hunt [ PDF clues ][ Answers ]
• Reading a meniscus [ PDF ][ Answers ]
• Reading periodic table element information Worksheet #1 [ PDF ][ Answers ] Worksheet #2 [ PDF ][ Answers ]
• Scientific Notation [ PDF ][ Answers ]
• Significant digits Rules [ PDF ][ Answers ] Addition and subtraction [ PDF ][ Answers ] Multiplication and division [ PDF ][ Answers ]
• Types of Chemical Reactions [ Worksheet ][ Answers ]

In addition to these chemistry worksheets, there is a collection of word search puzzles .

Chemistry Handouts

These chemistry handouts illustrate chemistry concepts and offer examples.

• Amino acid side chains [ PDF ]
• Antimatter examples [ PNG ]
• Atom facts [ PNG ]
• Chemical properties [ JPG ]
• Colligative properties [ JPG ]
• Electron configurations [ PDF ]
• Element electronegativities [ PDF ]
• 118 Element Flash Cards [ PDF ]
• Element list [ PDF ]
• Endothermic reactions [ PNG ]
• Error calculations [ JPG ]
• Exothermic reactions [ JPG ]
• Heterogeneous mixtures [ JPG ]
• Hydrocarbon prefixes [ JPG ]
• Ionic compound properties [ PNG ]
• Genetic codons [ PDF ]
• Lewis structures [ JPG ]
• Litmus test [ PNG ]
• Magnetic vs non-magnetic metals [ JPG ]
• Mole ratio [ JPG ]
• Organic vs inorganic [ JPG ]
• Oxidation numbers [ JPG ]
• Periodic table Bingo game [ PDF ]
• pH indicators [ PNG ]
• Physical change [ JPG ]
• Physical properties [JPG ]
• Noble metals [ JPG ]
• Reactants and products [ JPG ]
• RNA vs DNA [ JPG ]
• States of matter [ JPG ]
• Visible spectrum [ JPG ]

Periodic Tables

There’s a printable periodic table for just about any purpose, but some of the most popular are listed here.

• 118 element vibrant periodic table [ PNG ]
• Actinides [ JPG ]
• Blank periodic table [ PDF ]
• Element charges [ JPG ]
• Element density [ PDF ]
• Element electrical conductivity [ PDF ]
• Element state of matter [ PDF ]
• Muted color 118 element periodic table [ PDF ]
• Native elements [ JPG ]
• Valence [ JPG ]

Biology Worksheets and Handouts

Is biology more your thing? We’ve got similar resources for the life sciences, including biology, biochemistry, cell biology, and anatomy.

Chemistry Worksheets Terms of Use

You are welcome to print these resources for personal or classroom use. They may be used as handouts or posters. They may not be posted elsewhere online, sold, or used on products for sale.

This page doesn’t include all of the assets on the Science Notes site. If there’s a table or worksheet you need but don’t see, just let us know!

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Here, we have answered the most frequently asked questions from our students. If you have any further inquiries, please don't hesitate to reach out to us.

What is chemistry homework help, and how does it work?

Chemistry homework help refers to the assistance provided to students who need support with their chemistry assignments. TutorChamps, a reputable provider of academic support, offers chemistry homework help services. The process begins by submitting your chemistry homework or specific questions to TutorChamps. Experienced tutors review your assignment and provide step-by-step explanations, guidance, and solutions to help you understand and complete your homework effectively. TutorChamps tutors are well-versed in chemistry concepts and problem-solving techniques, ensuring that you receive accurate and comprehensive assistance.

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The cost of chemistry homework help from TutorChamps depends on various factors, such as the complexity of the assignment and the extent of assistance required. TutorChamps offers competitive and reasonable pricing for their services. To get an accurate quote for your specific chemistry homework help needs, it is recommended to contact TutorChamps directly and provide them with the details of your assignment.

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Motivational Story

TutorChamps has started a new initiative to inspire its students by sharing real motivational stories. So that students can get that motivation which will help them to deal with personal problems and perform better in academics.

The Woman Who Changed Science

Marie Curie was a Polish-born French physicist and chemist who lived from 1867 to 1934. She was the first woman to win a Nobel Prize and the first person to win two Nobel Prizes in different fields. Curie made pioneering contributions to the fields of physics and chemistry and her work has had a profound impact on the scientific community and the world as a whole.

Marie Curie faced many challenges and obstacles on her journey to success. Despite being a woman in a male-dominated field, and facing discrimination and prejudice, she refused to let these obstacles hold her back and continued to pursue her passion for science and knowledge.

Curie lacked formal education. Curie was born in Poland and was unable to attend traditional schools due to poverty. She was, however, self-taught and eventually went on to study in Paris where she earned her degrees in physics and mathematics.

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Chemistry homework can often be a daunting task, requiring a solid understanding of complex concepts and the ability to apply them effectively. If you find yourself struggling with chemistry assignments, TutorChamps is here to provide the expert assistance you need to succeed. ...

Our tutors at TutorChamps are highly knowledgeable in the field of chemistry. They possess an in-depth understanding of the subject and have the expertise to guide you through complex concepts and problem-solving techniques. Whether you need help with chemical equations, balancing reactions, or understanding organic chemistry, our tutors can provide the guidance and explanations you need to succeed. What sets TutorChamps apart is our commitment to personalized assistance. We recognize that each student has unique learning needs and preferences. Our tutors adapt their teaching methods to match your individual style and pace, ensuring that you receive tailored guidance that maximizes your learning potential. They patiently address your questions, provide clear explanations, and help you build a strong foundation in chemistry.

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What Topics Do Tutorchamps Cover in Chemistry Homework?

At TutorChamps, we cover a wide range of topics in chemistry homework. Our experienced tutors are well-equipped to provide comprehensive assistance in various areas of the subject. Some of the main topics such as:

Atomic Structure: Understanding the structure of atoms, including the arrangement of protons, neutrons, and electrons, as well as concepts like atomic number, mass number, and isotopes.

Chemical Reactions: Exploring different types of chemical reactions, such as synthesis, decomposition, combustion, and redox reactions. We can help you understand reaction mechanisms, balance equations, and predict products.

Stoichiometry: Solving problems related to mole-to-mole ratios, mass-to-mole ratios, and stoichiometric calculations. We can assist you in determining reactant and product quantities, limiting reactants, and percent yield.

Bonding and Molecular Structure: Understanding the types of chemical bonds (ionic, covalent, and metallic) and their properties. We cover topics such as Lewis structures, molecular geometry, hybridization, and intermolecular forces. 

Periodic Trends: Exploring the periodic table of elements, including trends in atomic radius, ionization energy, electron affinity, and electronegativity. We can help you understand the patterns and properties exhibited by elements. 

Acids and Bases: Understanding the concepts of acidity and basicity, pH scale, acid-base reactions, and titration. We can assist you in calculating pH, identifying conjugate acid-base pairs, and understanding acid dissociation constants. 

Organic Chemistry: Introducing the basics of organic chemistry, including functional groups, nomenclature, isomerism, and reactions of organic compounds. We can help you navigate through organic reactions and mechanisms. 

These are just a few examples of the topics we cover at TutorChamps. Our tutors are well-versed in the entire spectrum of chemistry, ranging from foundational concepts to advanced topics. Whatever your specific needs may be, we are dedicated to providing comprehensive assistance to help you succeed in your chemistry homework.

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Chemistry homework help is beneficial for a wide range of students who may encounter challenges or seek additional support in their chemistry assignments. Here are some examples of who can benefit from chemistry homework help:

Struggling Students: Students who find chemistry concepts difficult to grasp or struggle with problem-solving can benefit from homework help. Tutors can provide personalized guidance, explanations, and strategies to help struggling students improve their understanding and performance. 

Busy Students: Students with busy schedules, such as those involved in extracurricular activities or part-time jobs, may find it challenging to dedicate enough time to their chemistry homework. Homework help offers them the flexibility to seek assistance when needed, enabling them to manage their time more effectively. 

Advanced Learners: Even advanced learners can benefit from chemistry homework help. Tutors can provide enrichment materials, challenging problems, and deeper explanations to expand their knowledge and push their understanding of complex concepts to higher levels.

Exam Preparation: Students preparing for chemistry exams, whether it's for a class test, a standardized test, or a college entrance exam, can benefit from homework help. Tutors can offer targeted guidance, practice problems, and test-taking strategies to help students prepare effectively.

Students with Specific Goals: Students aiming for top grades, seeking to improve their academic standing, or pursuing a future career in chemistry can benefit from homework help. Tutors can provide specialized support tailored to their goals, helping them achieve the desired results.

Self-Motivated Learners: Even self-motivated learners who are enthusiastic about chemistry can benefit from homework help. Tutors can act as mentors, providing additional resources, challenging assignments, and insightful discussions to fuel their curiosity and deepen their understanding.

Students Needing Clarification: Students who have questions or need clarification on specific chemistry concepts or problem-solving techniques can benefit from homework help. Tutors can address their queries, provide in-depth explanations, and offer alternative approaches to foster a clearer understanding. 

Remember, chemistry homework help is designed to provide support and guidance to students at all levels of proficiency. It aims to enhance understanding, improve performance, and instill a love for the subject. Regardless of your current situation, seeking chemistry homework help can be a valuable resource on your academic journey.

Why is It Important For Students To Get Homework Help in Chemistry?

Taking homework help in chemistry is important for students for several reasons:

Concept Clarity: Chemistry involves complex concepts and theories that can be challenging to understand. Homework help provides students with the opportunity to receive personalized explanations and guidance from experts, helping them gain clarity and a solid foundation in the subject.

Improved Performance: Chemistry homework plays a crucial role in a student's overall academic performance. By seeking help, students can enhance their understanding, grasp difficult concepts, and improve their problem-solving skills. This, in turn, leads to better performance in exams and assignments.

Time Management: Students often have multiple commitments, such as classes, extracurricular activities, and other assignments. Seeking homework help in chemistry allows them to effectively manage their time. By outsourcing some of their homework tasks, students can focus on other important aspects of their education and personal life.

Accuracy and Precision: Chemistry assignments require attention to detail and accuracy. Homework help ensures that students approach their tasks with precision, reducing errors and improving the quality of their work. Expert tutors can guide students in using the correct formulas, applying the right methodologies, and interpreting data accurately. 

Confidence Building: Chemistry can be a challenging subject, and students may feel overwhelmed or discouraged when facing difficult homework tasks. Homework help provides support and encouragement, helping students build confidence in their abilities. With the assistance of expert tutors, students can tackle challenging problems and overcome obstacles.

Clarifying Doubts: Homework help allows students to clarify their doubts and seek answers to their questions. Expert tutors can address specific queries, explain complex concepts, and provide additional examples or resources for further understanding. This helps students gain a deeper comprehension of the subject matter.

Preparation for Exams: Homework assignments often serve as valuable practice for exams. By seeking homework help, students can effectively practice and reinforce their understanding of chemistry concepts. Tutors can provide targeted exercises, review important topics, and offer exam-specific strategies to help students prepare confidently.

Note: Taking homework help in chemistry is not a sign of weakness; it is a proactive approach to improve learning outcomes and achieve academic success. By seeking assistance from expert tutors, students can overcome challenges, deepen their understanding, and develop crucial skills that will benefit them in their academic and professional pursuits.

Is Chemistry Homework Help Available on TutorChamps For Urgent Assignments?

Yes, chemistry homework help is available for those who need it on an urgent basis at TutorChamps. We understand that students may occasionally have time-sensitive tasks or approaching deadlines. Therefore, we strive to accommodate urgent requests for assistance. 

When you have an urgent chemistry assignment, simply reach out to TutorChamps and inform us about the time constraints. Our team will make every effort to prioritize your assignment and ensure that you receive the necessary help within the specified timeframe.

Our tutors are experienced in working efficiently and effectively under time pressure. They are adept at providing timely solutions without compromising the quality and accuracy of the assistance they offer. Rest assured that even for urgent assignments, TutorChamps will deliver the necessary support to help you meet your deadlines.

To ensure that we can assist you with your urgent chemistry homework, we recommend contacting TutorChamps as soon as possible. The earlier you reach out, the better we can plan and allocate resources to address your specific needs promptly.

At TutorChamps, we are committed to providing reliable and timely chemistry homework help to students. We understand the importance of meeting deadlines and strive to support you in completing your assignments on time, even in urgent situations.

Can Someone Do My Chemistry Homework For Me? Yes, TutorChamps Here!

Yes, at TutorChamps, we can certainly help you with your chemistry homework. Our team of experienced tutors is ready to provide the necessary assistance to ensure your homework is completed accurately and effectively.

When you find yourself thinking, "Can someone do my chemistry homework for me?", TutorChamps is here to step in and provide the support you need. Our tutors have a deep understanding of the subject and can handle various types of chemistry assignments, from problem-solving to concept explanations.

To get started, simply reach out to TutorChamps with the details of your homework assignment. Our team will review the requirements and match you with a qualified tutor who specializes in the specific topic or concept related to your assignment.

The tutor will guide you through the problem-solving process, explain the necessary concepts, and provide step-by-step solutions. They will ensure that you understand the underlying principles and techniques involved in completing your chemistry homework. 

With TutorChamps by your side, you can be confident that your chemistry homework will be handled with professionalism and expertise. Our goal is to help you excel in your assignments and achieve the grades you deserve.

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Sat / act prep online guides and tips, the 5 best homework help websites (free and paid).

Other High School , General Education

Listen: we know homework isn’t fun, but it is a good way to reinforce the ideas and concepts you’ve learned in class. But what if you’re really struggling with your homework assignments?

If you’ve looked online for a little extra help with your take-home assignments, you’ve probably stumbled across websites claiming to provide the homework help and answers students need to succeed . But can homework help sites really make a difference? And if so, which are the best homework help websites you can use? 

Below, we answer these questions and more about homework help websites–free and paid. We’ll go over: 

• The basics of homework help websites
• The cost of homework help websites 
• The five best homework websites out there 
• The pros and cons of using these websites for homework help 
• The line between “learning” and “cheating” when using online homework help 
• Tips for getting the most out of a homework help website

So let’s get started! 

The Basics About Homework Help Websites–Free and Paid

Homework help websites are designed to help you complete your homework assignments, plain and simple. 

What Makes a Homework Help Site Worth Using

Most of the best sites allow users to ask questions and then provide an answer (or multiple possible answers) and explanation in seconds. In some instances, you can even send a photo of a particular assignment or problem instead of typing the whole thing out! 

Homework help sites also offer more than just help answering homework questions. Common services provided are Q&A with experts, educational videos, lectures, practice tests and quizzes, learning modules, math solving tools, and proofreading help. Homework help sites can also provide textbook solutions (i.e. answers to problems in tons of different textbooks your school might be using), one-on-one tutoring, and peer-to-peer platforms that allow you to discuss subjects you’re learning about with your fellow students. 

And best of all, nearly all of them offer their services 24/7, including tutoring! 

What You Should Should Look Out For

When it comes to homework help, there are lots–and we mean lots –of scam sites out there willing to prey on desperate students. Before you sign up for any service, make sure you read reviews to ensure you’re working with a legitimate company. 

A word to the wise: the more a company advertises help that veers into the territory of cheating, the more likely it is to be a scam. The best homework help websites are going to help you learn the concepts you’ll need to successfully complete your homework on your own. (We’ll go over the difference between “homework help” and “cheating” a little later!) 

You don't need a golden piggy bank to use homework help websites. Some provide low or no cost help for students like you!

How Expensive Are the Best Homework Help Websites?

First of all, just because a homework help site costs money doesn’t mean it’s a good service. Likewise, just because a homework help website is free doesn’t mean the help isn’t high quality. To find the best websites, you have to take a close look at the quality and types of information they provide! 

When it comes to paid homework help services, the prices vary pretty widely depending on the amount of services you want to subscribe to. Subscriptions can cost anywhere from $2 to $150 dollars per month, with the most expensive services offering several hours of one-on-one tutoring with a subject expert per month.

The 5 Best Homework Help Websites 

So, what is the best homework help website you can use? The answer is that it depends on what you need help with. 

The best homework help websites are the ones that are reliable and help you learn the material. They don’t just provide answers to homework questions–they actually help you learn the material. 

That’s why we’ve broken down our favorite websites into categories based on who they’re best for . For instance, the best website for people struggling with math might not work for someone who needs a little extra help with science, and vice versa. 

Keep reading to find the best homework help website for you! 

Best Free Homework Help Site: Khan Academy

• Price: Free!
• Best for: Practicing tough material 

Not only is Khan Academy free, but it’s full of information and can be personalized to suit your needs. When you set up your account , you choose which courses you need to study, and Khan Academy sets up a personal dashboard of instructional videos, practice exercises, and quizzes –with both correct and incorrect answer explanations–so you can learn at your own pace. 

As an added bonus, it covers more course topics than many other homework help sites, including several AP classes.

Runner Up: Brainly.com offers a free service that allows you to type in questions and get answers and explanations from experts. The downside is that you’re limited to two answers per question and have to watch ads. 

Best Paid Homework Help Site: Chegg

• Price: $14.95 to $19.95 per month
• Best for: 24/7 homework assistance  

This service has three main parts . The first is Chegg Study, which includes textbook solutions, Q&A with subject experts, flashcards, video explanations, a math solver, and writing help. The resources are thorough, and reviewers state that Chegg answers homework questions quickly and accurately no matter when you submit them.  

Chegg also offers textbook rentals for students who need access to textbooks outside of their classroom. Finally, Chegg offers Internship and Career Advice for students who are preparing to graduate and may need a little extra help with the transition out of high school. 

Another great feature Chegg provides is a selection of free articles geared towards helping with general life skills, like coping with stress and saving money. Chegg’s learning modules are comprehensive, and they feature solutions to the problems in tons of different textbooks in a wide variety of subjects. 

Runner Up: Bartleby offers basically the same services as Chegg for $14.99 per month. The reason it didn’t rank as the best is based on customer reviews that say user questions aren’t answered quite as quickly on this site as on Chegg. Otherwise, this is also a solid choice!

Best Site for Math Homework Help: Photomath

• Price: Free (or $59.99 per year for premium services) 
• Best for: Explaining solutions to math problems

This site allows you to t ake a picture of a math problem, and instantly pulls up a step-by-step solution, as well as a detailed explanation of the concept. Photomath also includes animated videos that break down mathematical concepts to help you better understand and remember them. 

The basic service is free, but for an additional fee you can get extra study tools and learn additional strategies for solving common math problems.

Runner Up: KhanAcademy offers in-depth tutorials that cover complex math topics for free, but you won’t get the same tailored help (and answers!) that Photomath offers. 

Best Site for English Homework Help: Princeton Review Academic Tutoring

• Price: $40 to $153 per month, depending on how many hours of tutoring you want 
• Best for: Comprehensive and personalized reading and writing help 

While sites like Grammarly and Sparknotes help you by either proofreading what you write via an algorithm or providing book summaries, Princeton Review’s tutors provide in-depth help with vocabulary, literature, essay writing and development, proofreading, and reading comprehension. And unlike other services, you’ll have the chance to work with a real person to get help. 

The best part is that you can get on-demand English (and ESL) tutoring from experts 24/7. That means you can get help whenever you need it, even if you’re pulling an all-nighter! 

This is by far the most expensive homework site on this list, so you’ll need to really think about what you need out of a homework help website before you commit. One added benefit is that the subscription covers over 80 other subjects, including AP classes, which can make it a good value if you need lots of help!  

Best Site for STEM Homework Help: Studypool

• Best for: Science homework help
• Price: Varies; you’ll pay for each question you submit

When it comes to science homework help, there aren’t a ton of great resources out there. The best of the bunch is Studypool, and while it has great reviews, there are some downsides as well. 

Let’s start with the good stuff. Studypool offers an interesting twist on the homework help formula. After you create a free account, you can submit your homework help questions, and tutors will submit bids to answer your questions. You’ll be able to select the tutor–and price point–that works for you, then you’ll pay to have your homework question answered. You can also pay a small fee to access notes, lectures, and other documents that top tutors have uploaded. 

The downside to Studypool is that the pricing is not transparent . There’s no way to plan for how much your homework help will cost, especially if you have lots of questions! Additionally, it’s not clear how tutors are selected, so you’ll need to be cautious when you choose who you’d like to answer your homework questions.  

What Are the Pros and Cons of Using Homework Help Sites?

Homework help websites can be a great resource if you’re struggling in a subject, or even if you just want to make sure that you’re really learning and understanding topics and ideas that you’re interested in. But, there are some possible drawbacks if you don’t use these sites responsibly. 

We’ll go over the good–and the not-so-good–aspects of getting online homework help below. 

3 Pros of Using Homework Help Websites 

First, let’s take a look at the benefits. 

#1: Better Grades Beyond Homework

This is a big one! Getting outside help with your studies can improve your understanding of concepts that you’re learning, which translates into better grades when you take tests or write essays. 

Remember: homework is designed to help reinforce the concepts you learned in class. If you just get easy answers without learning the material behind the problems, you may not have the tools you need to be successful on your class exams…or even standardized tests you’ll need to take for college. 

#2: Convenience

One of the main reasons that online homework help is appealing is because it’s flexible and convenient. You don’t have to go to a specific tutoring center while they’re open or stay after school to speak with your teacher. Instead, you can access helpful resources wherever you can access the internet, whenever you need them.

This is especially true if you tend to study at off hours because of your extracurriculars, work schedule, or family obligations. Sites that offer 24/7 tutoring can give you the extra help you need if you can’t access the free resources that are available at your school. 

#3: Variety

Not everyone learns the same way. Maybe you’re more of a visual learner, but your teacher mostly does lectures. Or maybe you learn best by listening and taking notes, but you’re expected to learn something just from reading the textbook . 

One of the best things about online homework help is that it comes in a variety of forms. The best homework help sites offer resources for all types of learners, including videos, practice activities, and even one-on-one discussions with real-life experts. 

This variety can also be a good thing if you just don’t really resonate with the way a concept is being explained (looking at you, math textbooks!).

Not so fast. There are cons to homework help websites, too. Get to know them below!

3 Cons of Using Homework Help Websites 

Now, let’s take a look at the drawbacks of online homework help. 

#1: Unreliable Info

This can be a real problem. In addition to all the really good homework help sites, there are a whole lot of disreputable or unreliable sites out there. The fact of the matter is that some homework help sites don’t necessarily hire people who are experts in the subjects they’re talking about. In those cases, you may not be getting the accurate, up-to-date, and thorough information you need.

Additionally, even the great sites may not be able to answer all of your homework questions. This is especially true if the site uses an algorithm or chatbot to help students…or if you’re enrolled in an advanced or college-level course. In these cases, working with your teacher or school-provided tutors are probably your best option. 

#2: No Clarification

This depends on the service you use, of course. But the majority of them provide free or low-cost help through pre-recorded videos. Watching videos or reading info online can definitely help you with your homework… but you can’t ask questions or get immediate feedback if you need it .

#3: Potential For Scamming 

Like we mentioned earlier, there are a lot of homework help websites out there, and lots of them are scams. The review comments we read covered everything from outdated or wrong information, to misleading claims about the help provided, to not allowing people to cancel their service after signing up. 

No matter which site you choose to use, make sure you research and read reviews before you sign up–especially if it’s a paid service! 

When Does “Help” Become “Cheating”?

Admittedly, whether using homework help websites constitutes cheating is a bit of a grey area. For instance, is it “help” when a friend reads your essay for history class and corrects your grammar, or is it “cheating”? The truth is, not everyone agrees on when “help” crosses the line into “cheating .” When in doubt, it can be a good idea to check with your teacher to see what they think about a particular type of help you want to get. 

That said, a general rule of thumb to keep in mind is to make sure that the assignment you turn in for credit is authentically yours . It needs to demonstrate your own thoughts and your own current abilities. Remember: the point of every homework assignment is to 1) help you learn something, and 2) show what you’ve learned. 

So if a service answers questions or writes essays for you, there’s a good chance using it constitutes cheating. 

Here’s an example that might help clarify the difference for you. Brainstorming essay ideas with others or looking online for inspiration is “help” as long as you write the essay yourself. Having someone read it and give you feedback about what you need to change is also help, provided you’re the one that makes the changes later. 

But copying all or part of an essay you find online or having someone write (or rewrite) the whole thing for you would be “cheating.” The same is true for other subjects. Ultimately, if you’re not generating your own work or your own answers, it’s probably cheating.

5 Tips for Finding the Best Homework Help Websites for You

Now that you know some of our favorite homework help websites, free and paid, you can start doing some additional research on your own to decide which services might work best for you! Here are some top tips for choosing a homework help website. 

Tip 1: Decide How You Learn Best 

Before you decide which site or sites you’re going to use for homework help, y ou should figure out what kind of learning style works for you the most. Are you a visual learner? Then choose a site that uses lots of videos to help explain concepts. If you know you learn best by actually doing tasks, choose a site that provides lots of practice exercises.

Tip 2: Determine Which Subjects You Need Help With

Just because a homework help site is good overall doesn’t mean that it’s equally good for every subject. If you only need help in math, choose a site that specializes in that area. But if history is where you’re struggling, a site that specializes in math won’t be much help. So make sure to choose a site that you know provides high-quality help in the areas you need it most. 

Tip 3: Decide How Much One-On-One Help You Need 

This is really about cost-effectiveness. If you learn well on your own by reading and watching videos, a free site like Khan Academy is a good choice. But if you need actual tutoring, or to be able to ask questions and get personalized answers from experts, a paid site that provides that kind of service may be a better option.

Tip 4: Set a Budget

If you decide you want to go with a paid homework help website, set a budget first . The prices for sites vary wildly, and the cost to use them can add up quick. 

Tip 5: Read the Reviews

Finally, it’s always a good idea to read actual reviews written by the people using these homework sites. You’ll learn the good, the bad, and the ugly of what the users’ experiences have been. This is especially true if you intend to subscribe to a paid service. You’ll want to make sure that users think it’s worth the price overall!

What’s Next?

If you want to get good grades on your homework, it’s a good idea to learn how to tackle it strategically. Our expert tips will help you get the most out of each assignment…and boost your grades in the process.

Doing well on homework assignments is just one part of getting good grades. We’ll teach you everything you need to know about getting great grades in high school in this article.

Of course, test grades can make or break your GPA, too. Here are 17 expert tips that’ll help you get the most out of your study prep before you take an exam.

Ashley Sufflé Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams.

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Topics covered by chemistry assignment help experts.

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Is It Legal to Ask, “Do My Chemistry Homework?”

The question of the legality of opting for chemistry homework help is not new in the EdTech industry. Some educational institutions labeled it bad for students, though there is no legal prohibition against this service. Some students get confused & often ask us whether it's legal or safe to ask, "do my chemistry homework." If the same question is bothering you, let us tell you that chemistry help online is not legally prohibited, just like the offline professional academic help you hire to get expert support. TutorBin follows all the legality and is a reputed organization that has already served 1.1M+ students so far. All our services are legal. Our team of chemistry helpers beholds high quality to ensure that students get all the benefits whenever they ask us, "do my chemistry homework."

How Chemistry Homework Helper Supports in Doing Chemistry Assignment

Talking about chemistry homework doesn't end with answers. It's much more than that. Whenever we discuss chemistry, we must not forget that it's mainly based on concepts. Whether it's formulas, reactions, or calculations, without clarity of understanding, solving chemistry problems is nothing but impossible. The very reason our chemistry homework helpers give their 100% effort in helping students to get clarity in subject knowledge & retain it effectively. See below to understand how our experts help support students in academics.

Offers step-wise solutions: Getting your answers is not enough for homework now. Most colleges & universities now demand step-wise solutions to see the required understanding of the topic. Our experts solve every question step-by-step to ensure that students comprehend how the problem is getting solved.

Give detailed Explanations: Another important aspect of our chemistry help is its detailed explanations of concepts. The subject matter experts follow this step to ensure that students know what type of problem-solving approach should be taken for which problem. It enables them to understand the concepts & they can use the knowledge to enhance their academic performance.

Improves analytical skills: When the subject is chemistry, rote memorization doesn't improve subject knowledge. Instead, it requires a deep understanding of topics. It improves your analytical skills to comprehend chemistry problems better and allows you to solve them without facing difficulties. Therefore, our chemistry homework helpers try their best to offer subject clarity.

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Finding Homework Help In Chemistry - Your Perfect Solution!

As an academic help platform, we have seen that students often face challenges finding homework help in chemistry. They invest their time but could not be able to understand which is the best option for them. It diverts their concentration and often leads them to make wrong decisions. The confusion can also become a major hindrance to students' academic success. Here, we have discussed the sources you should look for when finding homework help in chemistry. You also look at the checklist we have given here to ensure that you make the correct decision.

• Get chemistry homework help online from academic help websites
• Opt for online freelance tutors for chemistry homework help
• Seek help with chemistry homework from tutors of seniors or peers
• Offline tutors for help in chemistry homework
• Peer tutoring is also an option for chemistry homework help

Checklist to ensure that you are selecting the best option:

• At first, you must do background checking. Check the teaching background, previous experience & tutoring knowledge
• Secondly, it's vital to inform the tutor that homework should be unique as the school doesn't accept copied content
• Next, you must check out whether your tutor will be available at the time of your need
• Check out if your tutor is willing to spend some extra time if you have subject doubt
• Ensure that your tutor makes you understand the solution in detail through step-by-step solutions
• Look out whether the tutor will be able to chemistry help you in finishing your homework before the deadline
• Lastly, don't forget to consider your budget before settling for one

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It is tough for uni & grad school students to finish their chemistry coursework independently. Moreover, grasping the subject without the help of subject matter specialists includes more challenges. Under this circumstance, TutorBin experts try their best to make subjects enjoyable with their updated and engaging teaching style. It aids in continuous learning and makes students inclined toward the subject. Our tutors also ensure that students get experience applying their knowledge to solve real-life problems. Our empathy and efficiency make a difference with others.

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Our commitment to students is to make their education goal-oriented, easy, effective, and meaningful. We work hard to make what we believe. Students who need help with chemistry homework are normal, especially for those pursuing advanced studies. If you are one of them who needs help with chemistry homework, TutorBin is there for you. Opting for TutorBin homework help has several benefits. Our subject experts try their best to boost students' productivity and motivate them to study smart, enhancing their academic performance. Here, we will throw light on the benefits and explain why students require it if they think, "I need help with my chemistry homework."

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High-quality education at a competitive rate: Quality education at an affordable rate is what TutorBin wants to promote. When we offer our services, we ensure that students pay to do chemistry homework as per the complexity of the question and its deadline proximity. The service charges are mandatory as we work with experts, but we try to keep the competitive fees in mind the financial aspect of students.

24/7 Chemistry Homework Help Online To Upgrade Your Chemistry Knowledge

Talking about chemistry knowledge brings forth two significant factors: Practice or doing homework and knowledge upgrade. But these two habits demand enormous time and effort from students. Whether it's a tight deadline, homework struggle at odd hours, or facing challenges to ace chemistry, the solution is possible if you reach out to TutorBin. It's one of the best chemistry homework help online resources for college students and advanced study pursuers. TutorBin gained students' trust through its hard work and secured a strong position in the EdTech industry as one of the best online chemistry homework help. The site has efficient domain experts who maintain the quality of homework, even if they have a short timeframe. Due to the availability of round-the-clock expert service, TutorBin secures its position in the EdTech industry as a chemistry homework helper. Whenever students feel "I need help with chemistry" or seek chemistry help due to their problems of understanding, TutorBin is there 24/7 with its services. These things helped this company get high student ratings and recommendations.

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This company also offers personalized help with chemistry that suits the individualistic needs of students keeping their learning styles in mind. From qualified online chemistry homework help tutors to added guidance in homework help chemistry, you will get a customized learning experience from the chemistry homework helper team that's the best in the industry. Students not only receive meaningful learning but also get better academic help experience every time they opt for TutorBin. We make sure that your time is wisely used whenever you ask us, "Do my chemistry homework for me." If you are thinking, "Is it a good decision to ask for help to do my chemistry homework?" then see for yourself.

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Chemistry Homework Help FAQs Asked By Students

A best homework help site dedicatedly works to give students the best study and academic help experience. If you are opting for one of the best chemistry homework help sites, make sure that the site has a strong team of subject matter experts. If a site has 24/7 expert support with high-quality homework help, maintains on-time submission, and affordable rates, you can consider them one of the best options for homework help.

Other than these, we also got a query from some concerned students. They ask us, "Whether it's legal to pay someone to do my chemistry homework?"- In this case, we would like to inform our students that academic help, including chemistry homework help is not legally unethical and has no bans on it. Just like others, it is also a professional service. We promise students to help them get answers and solutions for different sub-disciplines like applied chemistry homework help.

Is there an app that solves chemistry?

You will get different apps like TutorBin that solve chemistry problems. These apps offer accurate solutions on diverse chemistry topics and enable you to submit your chemistry homework on time with the help of domain experts. These chemistry help apps are available on both Android and iOS.

Where can I ask chemistry doubts?

Many chemistry help websites are available on the Internet, offering to solve all your chemistry doubts from subject matter experts. TutorBin is one such highly recommended site that solves doubts and gives concept clarity.

Is there an app that answers chemistry questions?

Yes, numerous apps are available on the Internet that answer chemistry questions. You can check the TutorBin chemistry helper app to get accurate, unplagiarized chemistry answers from experts, and that too on time.

Is it legitimate for someone to do my chemistry homework?

A few universities think it is not legit if you request experts "do my chemistry homework," though there is no mention of illegality. Homework help sites do chemistry homework with good faith to make you understand the right approach to get solutions. It depends on students how they use this service.

How can I find someone to help with my chemistry assignment online

Search the internet and look for websites offering "do my chemistry homework" services to students. You will get many options over there. Visit the site and fill out the order form with your requests. The customer service team will contact you to understand your requirements and assign the best suited expert.

What website helps with chemistry?

TutorBin is a highly rated website that offers help with chemistry. If you are worried about chemistry homework, put a "pay someone to do my chemistry homework" request to TutorBin. You will get 100% accurate and plagiarism free chemistry answers on time at a very reasonable rate.

How Do I Pay Someone To Do Chemistry Homework For Me?

If you can't solve your chemistry homework or are facing difficulties, opt to pay someone to do chemistry homework for me service offered by online chemistry homework help websites. You just have to fill out the order form with the details of your requirements. The executive will contact you and inform you about the charge. Once the payment is made, you will be assigned an expert. Once your expert gets the job, you just have to wait for your answers to be completed on time.

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Faculty Resources

Assignments.

The assignments in this course are openly licensed, and are available as-is, or can be modified to suit your students’ needs. Available answer keys will be provided to faculty who adopt Waymaker or OHM courses with paid support from Lumen Learning. This approach helps us protect the academic integrity of these materials by ensuring they are shared only with authorized and institution-affiliated faculty and staff.

If you import this course into your learning management system (Blackboard, Canvas, etc.), the assignments will automatically be loaded into the assignment tool.

You can view these faculty-contributed assignments below or throughout the course.

Discussions

The following discussion assignments will also be preloaded (into the discussion-board tool) in your learning management system if you import the course. They can be used as is, modified, or removed. You can preview them below:

Optional Reading-Based Discussions

If you wish, you can include the following prompt to encourage students to complete their reading and discuss class topics with their peers.

Discussion Board Standards

It is expected that students will complete the assigned textbook readings prior to posting responses to the discussion board. Student interaction is encouraged. The goal of these online discussions is to simulate the sort of group discussion that can occur in traditional classroom settings. Therefore, students must post comments to at least two classmates. In addition, the instructor may post their reaction to student comments.

The instructor will assess the quality of student contributions towards group discussion and determine a grade for each unit/chapter.

• Student discussion must be relevant to the specific question being discussed.
• Students should demonstrate their understanding of the issues, theories, and problems from their textbook readings and homework. Good student commentary will make reference to specific textbook readings and make use of the terminology introduced in the chapter.
• Students should respond to the discussion questions with an attitude of proper objectivity and a willingness to discuss matters with others who do not share their viewpoint. Criticism of theories or ideas is appropriate; however, the tone of this criticism should remain scholarly rather than personal.
• Students are encouraged to make use of examples and counter-examples, compare and contrast theories, make reference to past learning, indicate problems or difficulties they have with the theories, and draw out the relevant implications of the discussion.
• Students may also raise questions they have about the readings and discuss possible answers provided these questions are relevant to the topic of the discussion.

Consider the discussions as opportunities to share ideas about this exciting material with your classmates—enjoy this!

• Assignments. Provided by : Lumen Learning. License : CC BY: Attribution
• Reading-Based Discussions. Authored by : Shawn Shields. Provided by : Germanna Community College. License : CC BY: Attribution
• Pencil Cup. Authored by : IconfactoryTeam. Provided by : Noun Project. Located at : https://thenounproject.com/term/pencil-cup/628840/ . License : CC BY: Attribution

Library Subject Guides

• Subject Guides
• Assignment Research

Chemistry: Assignment Research

• Books and ebooks
• Dictionaries, Encyclopedias, Handbooks
• Journal Articles and Databases
• Journal Title Abbreviations
• Data and Properties
• Exam Papers (via AKO | LEARN)
• Past Tests (via AKO | LEARN)
• Products and Prices
• Safety Data Sheets
• Structure Drawing Tools and Nomenclature
• Information Competencies for Chemistry Undergraduates (Wikibook)
• Stages in the Research Process
• Citation Styles and EndNote
• Writing Guides
• Web Lectures
• Stay Current
• For Academics
• Library Navigator

Introduction

This guide to basic assignment research outlines a simple but effective approach to finding information for your assignment. It is based on the resources described elsewhere in this subject guide and on the UC Library web site. Depending on your topic and your level of study, you may need to rearrange or review these steps where necessary

Check the rest of this subject guide carefully for additional subject resources and, where available, appropriate topic guides

1. Define your topic

Make sure you understand the topic. Identify the main concepts or keywords in your question to help you develop a search strategy.

2. Gather background information

Use dictionaries and encyclopedias to find definitions and background information. Articles from specialised subject encyclopedias are authoritative and often substantial

Read more on

• Dictionaries, Encyclopedias and Handbooks for Chemistry

3. Think about what information you need

• How much information do you need? Lecturers often give guidelines on the number of sources you should use
• Do you need current information or is older material relevant? Sometimes you might need both, as you might have to give both the historic background and the current situation of a topic
• Do you need primary sources that give an original account of research, or secondary sources that are interpretations of someone else's work?

If you do not understand what you have to do for an assignment, ask your lecturer, your tutor or someone at the Academic Skills Centre

4. Find books

Search the library catalogue

• Check for books on High Demand .
• Use Title and Keyword anywhere searches to find additional material.
• When you find a useful title, click its subject headings to find books on similar subjects.

Read more on:

• Finding Chemistry Books and Ebooks

5. Find journal articles

6. Find information on the Internet

• a government department (.gov or .govt.nz)
• an academic (.edu or .ac.nz or published in a reputable journal)
• a business (what are they selling?)
• or a random non-expert?

Use Google Scholar to find reliable journal articles, or the Advanced Search features of Google to restrict your search to results from more reputable sources.

• Web searching

7. Evaluate your sources

• Critically Analyzing Information Sources (Cornell University)
• How to spot fake news .

8. Cite your sources

• Citing your sources

9. Write your assignment

See our writing guides page for books that have useful hints for writing on technical subjects.

Visit the  Academic Skills Centre  for workshops and/or personal help.

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• Next: Information Competencies for Chemistry Undergraduates (Wikibook) >>
• Last Updated: May 20, 2024 4:00 PM
• URL: https://canterbury.libguides.com/chem

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• Exploring Phase Equilibria & Diagrams: Analyzing Chemical Systems for Assignments

Unveiling the Depths of Phase Equilibria and Phase Diagrams

Chemical systems, in their dynamic dance of phases and compositions, present an intricate puzzle for scientists and researchers. At the heart of unraveling this complexity lies the profound significance of phase equilibria and phase diagrams. These tools act as guiding lights, illuminating the pathways to understanding the behaviors and compositions of chemical systems with unprecedented clarity. If you need help with your physical chemistry assignment , exploring the significance of phase equilibria and phase diagrams can provide valuable insights into the behaviors and compositions of chemical systems, enhancing your understanding of this dynamic field.

Phase equilibria, at its essence, encapsulates the conditions where multiple phases of a substance coexist in a state of equilibrium. This equilibrium, often elusive in its manifestation, finds its visual representation through phase diagrams. These diagrams serve as graphical depictions, unveiling the intricate relationships between pressure, temperature, and the composition of a given system.

Imagine a scenario where a substance exists in multiple phases, each vying for dominance within the system. Phase equilibria helps in demystifying this intricate coexistence. It allows scientists to comprehend and predict the conditions under which these phases harmoniously cohabit. Whether it's the equilibrium between solid, liquid, and gas in a water system or the varying allotropes of an element under different temperature and pressure, phase equilibria provides the framework for comprehension.

Enter the phase diagrams, the visual maestros of chemical analysis. These graphical representations serve as a Rosetta Stone, decoding the language of phase equilibria. They depict, with precision and clarity, the boundaries and regions where different phases exist in equilibrium. A glance at a phase diagram can reveal a wealth of information—the pressure and temperature conditions where a substance transitions between states, the compositions where multiple phases coexist, and the critical points where distinctions between phases blur into a unified whole.

In the realm of academic pursuits and scientific investigations, the indispensability of these tools becomes profoundly evident. Assignments that demand an intricate comprehension of chemical systems find their solutions anchored in phase equilibria and phase diagrams.

Consider an assignment tasked with analyzing the behavior of a substance under varying conditions. Phase equilibria acts as the guiding compass, enabling a structured understanding of the system's dynamics. It empowers researchers to predict, explain, and interpret the behavior of substances based on the equilibrium conditions between their phases.

Moreover, these tools facilitate the comprehension of complex industrial processes. Engineers and scientists rely on phase diagrams to optimize processes, determine ideal conditions for reactions, and ensure the stability and efficiency of materials and products. From designing alloys with specific properties to optimizing chemical reactions in industrial settings, phase equilibria and phase diagrams form the backbone of these endeavors.

Their pivotal role extends beyond academic pursuits and industrial applications. In fields as diverse as geology, environmental science, and material science, these tools serve as invaluable assets. Understanding geological formations, predicting environmental changes, and tailoring material properties all hinge upon a profound grasp of phase equilibria.

System Visualization and Comprehension

Phase Diagrams are invaluable tools in comprehending the behavior of chemical systems across diverse conditions. Functioning as visual roadmaps, they elucidate the intricate relationships between temperature, pressure, and composition within a system. These diagrams offer a comprehensive overview, enabling students to discern phase transitions, critical points, and compositional variations with clarity.

By plotting phases—solid, liquid, and gas—against varying parameters, phase diagrams provide a holistic view of a substance's behavior under different circumstances. They unveil the boundaries delineating phase changes and reveal crucial information about the conditions where transitions occur, such as melting points or boiling points. Furthermore, these diagrams elucidate how altering composition influences phase equilibrium, offering insights into the material's properties and behaviors.

Through their visual representation, phase diagrams simplify complex concepts, facilitating a deeper understanding of chemical systems. They serve as foundational tools for scientists and students alike, fostering a comprehensive comprehension of how substances behave and interact. Ultimately, these diagrams are indispensable aids in grasping the dynamic nature of chemical systems and their responses to varying environmental factors.

Prediction of Phase Transformations

Understanding phase boundaries is fundamental in predicting the behavior of substances under diverse conditions. These boundaries delineate the shifts between different states of matter, like solid, liquid, and gas, offering insights into transformations. They serve as a map guiding predictions on how substances respond to varying temperatures and pressures.

Imagine a solid melting into a liquid when heated. This transition occurs precisely at the melting point—the phase boundary between solid and liquid. Similarly, vaporization occurs at the boiling point, marking the boundary between liquid and gas. Knowing these thresholds is vital in anticipating how a substance will react under specific environmental changes.

Consider water: understanding its phase boundaries elucidates its behavior at various altitudes or in diverse climates. At sea level, water boils at 100 degrees Celsius, but at higher altitudes, with decreased atmospheric pressure, it boils at lower temperatures. This comprehension aids in industries like food processing, pharmaceuticals, and material sciences, ensuring products remain stable under different conditions.

In essence, comprehending phase boundaries empowers scientists to foresee and manipulate substance behaviors, facilitating innovations, advancements, and the development of resilient and adaptable materials and processes.

Analyzing Complex Mixtures

Phase Diagrams are indispensable tools when navigating the complexities of mixtures in various scientific disciplines. These diagrams act as comprehensive maps, providing insights into the behavior of compounds under different conditions. They meticulously unravel the intricate relationship between composition, temperature, and pressure, offering a visual representation of the phases present at specific combinations of these variables.

By decoding Phase Diagrams, researchers can precisely comprehend the diverse phases a mixture may exhibit. These diagrams illuminate the transitions between solid, liquid, and gas phases, offering a detailed understanding of the transformations occurring within a system. Whether studying the behavior of alloys in metallurgy or analyzing the properties of solutions in chemistry, Phase Diagrams offer a structured approach to unraveling the mysteries of complex mixtures.

Their significance lies in their ability to simplify the complexity inherent in mixtures, making it feasible to predict the behavior of substances under varying conditions. Through these visual aids, scientists can conduct informed analyses, make critical decisions, and engineer novel materials with specific properties.

In essence, Phase Diagrams serve as indispensable guides, aiding in the interpretation and comprehension of the intricate nature of mixtures, ultimately advancing our understanding and application of diverse scientific principles.

Determination of Equilibrium Constants

In the intricate dance of chemical reactions, phase equilibria stand as the silent conductors, orchestrating the balance within systems. These equilibria mark the junctures where different states of matter—solid, liquid, and gas—harmoniously coexist, their delicate arrangement dictated by specific conditions of temperature and pressure. Their significance transcends mere coexistence; they serve as gateways to understanding the very essence of reactions, laying the foundation for comprehensive comprehension within the realm of chemistry.

At its core, phase equilibria hold the key to unlocking the quantitative measures of reactions—the elusive equilibrium constants. These constants, derived from the equilibrium conditions, provide a numeric representation of a reaction’s extent towards completion. This pivotal information guides chemists in understanding the thermodynamic forces at play, offering insights into the dynamic equilibrium between reactants and products.

Yet, their importance surpasses the confines of academic exercises. Phase equilibria act as windows into the intricate interplay of elements, compounds, and energy states, revealing the conditions under which reactions stabilize. This comprehension forms the bedrock for predicting and controlling reactions, a knowledge that permeates through industrial processes, environmental transformations, and diverse scientific domains.

Chemists delve into the nuances of phase equilibria to unravel the behavior of substances. These equilibria unveil the thresholds governing transitions between phases or reactions between substances, empowering chemists to optimize reaction conditions and minimize wastage. From designing efficient chemical processes in industries to understanding environmental changes, the mastery of phase equilibria becomes the compass guiding scientific innovation and sustainability.

Consider the transformation of water from liquid to vapor or ice, a quintessential example showcasing the influence of phase equilibria. Understanding the equilibrium between these phases elucidates the conditions necessary for water to exist in each state. This knowledge underpins the development of technologies like distillation or phase-change cooling systems, revolutionizing industrial processes and everyday applications.

Moreover, phase equilibria foster an appreciation for the delicate balance governing chemical systems. They empower scientists to design catalysts that optimize reactions, reducing energy input and enhancing efficiency. This understanding facilitates the creation of cleaner processes, mitigating environmental impact and steering industries towards sustainable practices.

In essence, phase equilibria are the linchpin of chemical understanding. They illuminate the pathways of substances, elucidate the dance between different states of matter, and provide the roadmap for manipulating reactions in desired directions. Their mastery is not confined to laboratories; it transcends disciplines, permeating industries, environmental studies, and technological advancements.

Navigating Phase Equilibria and Diagrams: Tips for Assignments

Phase diagrams serve as critical tools in understanding the behavior of substances under varying conditions, delineating the relationship between pressure, temperature, and phases within a system. Three pivotal concepts define the essence of comprehending these diagrams.

Firstly, comprehending Axes and Regions is fundamental. Each axis on a phase diagram, often representing parameters like temperature and pressure, holds immense significance. Understanding these axes helps in visualizing how different regions on the diagram correspond to distinct phases or boundaries within the material. For instance, in a water phase diagram, the boundaries separating solid, liquid, and gas phases are demarcated, showcasing the conditions where these phases coexist or transform.

Secondly, the application of Mathematical Relationships, such as the renowned Gibbs phase rule, aids in a quantitative analysis of phase equilibria. These mathematical principles establish constraints on the system's degrees of freedom, providing insights into the conditions necessary for multiple phases to coexist. This understanding is invaluable in predicting phase transitions and stability under varying environmental conditions.

Lastly, the Integration of Experimental Data is crucial for real-world applications. Incorporating empirical data into phase diagrams enhances their accuracy and applicability. By overlaying experimental results onto these diagrams, scientists and engineers can visually analyze and predict how materials behave under specific circumstances. This integration bridges theoretical knowledge with practical observations, allowing for a more comprehensive understanding of complex systems.

Phase Equilibria and Phase Diagrams are foundational concepts in the realm of chemistry, serving as indispensable tools that unravel the mysteries of how matter behaves under varying conditions. For students navigating the intricate landscape of chemical systems, mastering these principles represents a gateway to unlocking a profound understanding of molecular interactions and equilibrium states.

At its core, Phase Equilibria involves the study of the balance between different phases of matter, such as solid, liquid, and gas, within a system at equilibrium. This equilibrium state is represented and understood through Phase Diagrams, graphical representations that showcase the relationships between temperature, pressure, and composition of different phases in a system. These diagrams encapsulate a wealth of information, offering a visual roadmap to comprehend the behavior of substances under diverse conditions.

One of the pivotal aspects of Phase Equilibria and Phase Diagrams is their role in elucidating how matter transitions between phases. Take, for instance, the familiar water molecule. Understanding its behavior as it transforms from solid ice to liquid water and further to gaseous vapor involves comprehending the intricate interplay between temperature and pressure, beautifully illustrated by phase diagrams.

Moreover, these concepts serve as more than theoretical frameworks or academic exercises. They act as navigational tools for students tackling assignments in chemistry. By grasping the intricacies of Phase Equilibria and Phase Diagrams, students gain the ability to decipher and predict how different substances behave under varying conditions, enabling them to approach assignments with a deeper insight.

For instance, in the realm of material science, these principles are invaluable in designing and understanding the behavior of alloys. Engineers and scientists can predict the phases present in an alloy at different temperatures and compositions, ensuring the creation of materials with specific properties suited for diverse applications, from aerospace engineering to biomedical devices.

Furthermore, Phase Equilibria and Phase Diagrams foster a deeper comprehension of natural phenomena. In fields like geology, understanding the phase behavior of substances under extreme temperature and pressure conditions elucidates the formation of minerals and rocks, shedding light on the Earth's geological processes over millennia.

Mastering these tools doesn't just involve interpreting diagrams; it involves grasping the fundamental principles that govern the behavior of matter. It cultivates critical thinking skills, enabling students to analyze and predict the behavior of complex chemical systems. This proficiency is not confined to textbooks or classrooms; it transcends into real-world applications, impacting industries, research endeavors, and technological advancements.

In conclusion, Phase Equilibria and Phase Diagrams serve as the backbone of comprehending chemical systems. They are not mere graphical representations or equilibrium states; they represent keys to unlocking the mysteries of matter's behavior. Mastering these tools is an essential journey for students, offering insights into the intricate dance of molecules and providing a lens to decipher the complexities of the chemical world. Their significance extends far beyond academia, permeating various scientific disciplines and industries, shaping our understanding and manipulation of matter for diverse purposes.

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Talented 12: Chemical & Engineering News announces its 2024 rising stars in chemistry

FOR IMMEDIATE RELEASE

WASHINGTON, May 17, 2024 — Chemical & Engineering News (C&EN), an independent news outlet of the American Chemical Society (ACS), has unveiled its annual Talented 12 list. The list highlights early-career researchers in the chemical sciences who are fearlessly tackling difficult global problems. These intrepid innovators in chemistry are featured in the May 13/20 issue of C&EN; read about the impressive class .

Using a rigorous review process, a group of C&EN editors and staff selected this year’s Talented 12 from an array of nominations, which came from peers, supervisors and self-nominations. The world-changing work by this year’s group includes research with a variety of applications from making better batteries to developing new drugs to tackling climate change.

Below is the list of 2024’s Talented 12 class.

Chibueze Amanchukwu , University of Chicago This electrochemist invents new electrolytes to boost batteries.

Ahmed Badran , Scripps ResearchThis synthetic biologist evolves proteins to tackle global challenges like climate change.

Rachel Carter , U.S. Naval Research Laboratory This mechanical engineer makes batteries safer and more sustainable.

Rob Dennis-Pelcher , The Goodyear Tire & Rubber Company This materials scientist scouts out technologies to improve tire performance and sustainability.

Samantha M. Gateman , University of Western Ontario This analytical chemist studies metals at the atomic level to prevent corrosion.

Alisha Jones , New York University This biophysical chemist pairs computational and experimental tools to unravel RNA structure.

Outi Keinänen , University of Alabama at Birmingham This radiochemist tracks how microplastics move through the body.

Sarah Lovelock , University of Manchester This biological chemist streamlines oligonucleotide synthesis.

Jesus Moreno , Bristol Myers Squibb This medicinal chemist designs and develops targeted protein degraders.

Nako Nakatsuka , Swiss Federal Institute of Technology (EPFL) This neurotechnologist integrates aptamers and transistors to monitor brain chemistry.

Michael Skinnider , Princeton University This computational chemist combines mass spectrometry and machine learning to uncover metabolites.

Julian West , Rice University This organic chemist harnesses the catalytic power of iron with light.

“Each of these chemists is doing important work, contributing to positive changes in our health, societies and environment,” says Nick Ishmael-Perkins, C&EN editor in chief. “They are also, all of them, compelling personalities, demonstrating that science takes talent and creativity as much as it does rigor and expertise. These are exactly the kind of stories of inspiration that C&EN wanted to showcase when it started the Talented 12 feature ten years ago.”

Members of the Talented 12 will speak about their work and their journeys during a symposium on Aug. 19 at ACS Fall 2024 in Denver. If you are interested in obtaining headshots of any of the Talented 12, please contact newsroom@acs.org .

Do you know a talented chemist who fits the Talented 12 bill? Nominate someone to be considered  as a member of next year’s Talented 12.

The American Chemical Society (ACS) is a nonprofit organization chartered by the U.S. Congress. ACS’ mission is to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and all its people. The Society is a global leader in promoting excellence in science education and providing access to chemistry-related information and research through its multiple research solutions, peer-reviewed journals, scientific conferences, eBooks and weekly news periodical Chemical & Engineering News . ACS journals are among the most cited, most trusted and most read within the scientific literature; however, ACS itself does not conduct chemical research. As a leader in scientific information solutions, its CAS division partners with global innovators to accelerate breakthroughs by curating, connecting and analyzing the world’s scientific knowledge. ACS’ main offices are in Washington, D.C., and Columbus, Ohio.

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Journal of Materials Chemistry C

Highly efficient blue-green dual-narrow-emission in rbal11o17:eu2+, mn2+ toward wide-color-gamut human-centric backlights.

A combination of violet light-emitting diodes (LED) chips and trichromatic highly efficient narrow-band emission phosphors to create color images can help to effectively address sleep and mood disorders caused by strong blue LED radiation, and is in line with the development of “human-centric” backlight displays. In this work, RbAl11O17:Eu2+ exhibit narrow-band (full width at half maximum = 50 nm), thermally stable (150 °C, 86.96%), and highly efficient blue emission (62.87%) under violet excitation. Rb0.80Al11O17:Eu2+ offers higher color purity than BaMgAl10O17:Eu2+ and is an alternative to blue chips. RbAl10.70O17:0.30Mn2+ exhibits narrow green emission (full width at half maximum = 26 nm) and low luminescence efficiency (~2.91%). An efficient energy transfer of Eu2+→Mn2+ in the RbAl11O17:Eu2+, Mn2+ system is designed for the spectral transition from blue emission to blue-green dual emission. The luminescence efficiencies of Rb0.80Al10.95O17:0.20Eu2+, 0.05Mn2+ and Rb0.80Al10.80O17:0.20Eu2+, 0.20Mn2+ can reach more than 60%. The good color gamut (118% National Television Standards Committee) of white LED encapsulated with a combination of Rb0.80Al10.95O17:0.20Eu2+, 0.05Mn2+, K2SiF6:Mn4+ phosphors and a violet chip justifies its potential application in human-centric backlit displays. The guidance into the modulation of the excitation spectrum and enhancement of the luminescence performance of Mn2+-doped phosphors is provided by this work.

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Y. Xue, Y. Liang, W. Zhang, X. Wu and C. Han, J. Mater. Chem. C , 2024, Accepted Manuscript , DOI: 10.1039/D4TC01194E

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