smartwork chapter 2 homework

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2D Molecule Drawing Module - General Chemistry

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2D Molecule Drawing Module

The 2D Molecule Drawing Module (MDM) allows students to draw chemical structures or reactions as answers to Smartwork questions. An example of an MDM problem is shown below. Depending on your screen resolution or your browser settings, you may need to adjust the zoom in order to see the entire MDM. The figure below shows the entire MDM, which consists of a white workspace surrounded by a dark-gray border that contains several toolbars.

The figure above presents the MDM with a “blank” module workspace (the white area). Students may also see the MDM shown with a chemical drawing prompt, such as an atom, molecule, chemical reaction, or chemical scheme. The figure below provides an example of what the MDM may look like when a prompt is shown. Depending on the nature of the question being asked, the prompts can vary widely.

There are three primary toolbar areas within the MDM border. The toolbar areas are highlighted in the figure below as follows: formatting tools (red), drawing tools (blue), and elemental symbols (green).

Here is a video introduction to the 2D Molecular Drawing Module:

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2D Molecule Drawing Module – Toolbar Introduction

Formatting Toolbar:  The formatting toolbar on the top left of the MDM contains four or five tool options depending on the state of the workspace window. A zoomed-in view of the formatting toolbar’s five-tool version is shown here: 

(Note: Only the four-tool option is shown in the previous MDM views up above.)

The table below gives the name and general function of each of the five tools in the formatting toolbar.

Here is a video introduction of the Formatting Toolbar:

Drawing Toolbar:  The drawing toolbar on the left side of the MDM contains eight tool options. A zoomed-in view of the toolbar is shown here: 

The following table lists and gives the name of each tool along with a brief discussion of its function.

Here is a video introduction of the Drawing Toolbar:

Here is a video introduction of the Elemental Symbol Toolbar:

Using the 2D Molecule Drawing Module

Example 1: methane, ch 4.

The next few figures will show you how to use the MDM to draw some chemical figures. The first molecule is methane, CH 4 . Once complete, your molecule should look similar to this:

In the MDM workspace, click on the C (for carbon) icon in the Elemental Symbols toolbar. In the figure below, note that the C has been highlighted in gray, denoting that it has been selected.

With the C now active, click in the white workspace area. This will put the carbon atom where you clicked.

Activate the H by clicking on the H icon in the Elemental Symbols toolbar. Now, mouse over the C in the workspace. The C will be highlighted with a blue circle.

With the C highlighted with the blue circle, click and hold the left mouse button while dragging the mouse away from the C atom. This will draw a single bond between the C and the H when you release the mouse button.With the C highlighted, click and hold the left mouse button while dragging the mouse away from the C atom. This will draw a single bond between the C and the H when you release the mouse button.

Using this same method, draw the remaining three hydrogen atoms on the carbon. Your drawing should look similar to the picture below, depending upon which directions you dragged your mouse.

Note: You don't need to zoom in before submitting your answer, but you may find it useful to do so to ensure that all atoms are bonded as you intended. Additionally, Smartwork will grade your answer based on connectivity (how the atoms are connected) rather than what the molecule you drew looks like. In this case, so long as the carbon has the four hydrogens attached, your answer will be marked as correct.

Below is a video demonstration of Example 1:

Example 2: Water, H 2 O

You can start by selecting the O atom from the Elemental Symbols toolbar and clicking in the white workspace.

Activate hydrogen by clicking on the H icon in the Elemental Symbols toolbar. Mousing over the O in the workspace will highlight the O with a blue circle around it.

With the O highlighted with the blue circle, click and hold the left mouse button while dragging the mouse away from the O atom. This will draw a single bond between the O and the H when you release the mouse button. To add the second H atom, click on the O and drag again.

The O atom in water should have two lone pairs of electrons. In the dropdown menu, click on the pair of electrons (two dots) to activate it. To add the first pair, click on the O atom.

To add the second pair, click on the O atom again. Notice that the positions of the lone pairs on the O atom are automatically adjusted when the second pair is added.

Below is a video demonstration of Example 2:

Example 3: Isocyanate ion, OCN –

Note : While the particular resonance structure of the ion shown below is not the most chemically stable, it was chosen since several MDM tools could be used to draw it.

In addition to the method presented in the previous two examples, another way to draw a molecule that contains multiple chemical elements is to draw the basic structure using only one element and then using the Elemental Symbols tool bar to change them to the proper elements. In this example, the basic structure is drawn with all C atoms. 

Click on the C in the Elemental Symbols toolbar. Next, click in the white workspace. The C atom will appear. Mouse over the C atom to highlight it with a blue circle. Click and hold on the C while dragging the mouse to the right. A second C bonded to the first will display.

Mouse over the C atom on the right to highlight it with a blue circle. Click and hold while dragging the mouse again to the right to make the third C appear. You structure should look like this.

To change the left C atom to an O atom, click on the O in the Elemental Symbols toolbar, followed by clicking on the left C atom.

Repeat the process to change the C atom on the right to a N atom. Click on the N in the Elemental Symbols toolbar, followed by clicking on the right C atom.

Mousing over the bond between the O and C atoms will circle it in blue.

Clicking on the circled bond will change it to a triple bond.

Note : After doing this, only the plus symbol (+) will be shown; the number 1 is omitted from the structural drawing. Occasionally, the bonds and charges may overlap on the screen as shown below, but the question will still grade normally.

Below is a video demonstration of Example 3:

Valence Error

A valence error message will be displayed if the formal charge on an atom does not match with the valence due to surrounding bonds and lone pairs.  In the structure below, the terminal oxygen atom with a complete octet must have a formal charge of -1. 

Because the negative formal charge is not labeled on the atom, the valence error will be displayed as the feedback after the question is submitted.  This valence check will automatically apply to all structures drawn, and will supersede other feedback.

Drawing Errors

A warning message will be displayed if you draw two arrows on top of each other.  To dismiss the message, use the delete tool to remove one of the duplicate arrows before continuing.

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CHEM 105, Section 001 (Dr. Lammi)

SmartWork is the online homework/tutorial environment created by the publisher of our textbook. Since the publisher provides access to SmartWork free of charge with new textbooks (in certain formats), I have created OPTIONAL (ungraded) assignments for interested students, which will provide additional practice with problem-solving, including feedback and step-by-step solutions .

I would suggest that you work the assigned textbook problems first (these are not online), and then use SmartWork to gain additional practice (including tips, etc.) on those concepts with which you struggled.    

ACCESSING SMARTWORK

To use SmartWork , you will need:

·          A valid e-mail address (it’s suggested to use your Winthrop e-mail)

·          A registration code from the publisher , W. W. Norton. If you bought a textbook “With Access” from the Winthrop bookstore, this code came with your textbook. If not, you can purchase one from W. W. Norton: http://books.wwnorton.com/books/buysmartwork/ . SmartWork access for a single semester is $25.

·          The course enrollment key for our specific course: CHEMAT10735 (Note that it is case-sensitive)

Once you have your registration code and the enrollment key above, you’re ready to access SmartWork from the following website: http://smartwork.wwnorton.com/sw/login/index.php

A screenshot of our course “homepage” in SmartWork is shown below. Assignments are organized by chapter; you’ll be able to click on each assignment to access and answer the questions it contains.

A FEW TIPS AND NOTES

·          If you’re going to use SmartWork , make sure you try the “Getting Familiar with SmartWork ” exercises , so that you understand how to enter your answers, including dealing with subscripts and superscripts, inserting symbols, answering matching questions, etc. This will save you frustration later.

·          I plan to post two “assignments” of practice problems for each textbook chapter. Once posted, these will remain accessible to you throughout the semester. You may try questions as many times as you like, visit and return to assignments, etc.  

o    The “Practice, Ch. 1” and “More Practice, Ch. 1” assignments are already posted for you.

o    There are also three math-related “assignments” under Chapter 1.

·          You may also want to check out the ChemTours resource accessible within SmartWork . These brief presentations on various topics may be useful supplements to your lecture notes and textbook.

·          Again, please remember that everything in SmartWork will be an optional, ungraded opportunity for extra practice and feedback.  

W. W. NORTON & COMPANY

A Better Ebook and Online Homework Experience

Give your students an interactive ebook featuring videos and animations as well as an intuitive online homework system.

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Joel Karty, author and master teacher, developed more than 80 videos and narrated animations on elementary mechanisms and problem-solving in organic chemistry. These videos are specifically designed to counter common student misconceptions and are used in the ebook as well as Smartwork online homework. These engaging videos and animations were built around Joel Karty’s text pedagogy and go hand-in-hand with his approach. This results in a cohesive learning package with a unified approach across ebook, videos, and Smartwork online homework.

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These 20 videos guide students on how to solve difficult types of problems or visualize difficult topics. They are built around Joel’s pedagogy, complement book sections, and provide students with strategies for doing well on key concepts in the course.

“These videos are fantastic! They are very professional; you guys do great work!”

— Paige Hoyt, student at University of Findlay

Mechanism Drawing Videos

Whiteboard videos of 50 selected mechanisms covered in the book discuss common mistakes along the way, helping students learn to draw mechanisms on their own. Half have been recorded by Kristen Barrett, Rowan University.

“I would personally use this video to help learn chair conformations, and I would recommend any classmates who struggled too to watch it.”

— Phoenix Dasbach, student at University of Findlay

3D Animations

These 15 animations help students visualize what is happening on a molecular level during the elementary steps. They also show simultaneous concomitant changes to the energy diagram and drawn curved arrows.

Intuitive online homework built by organic chemists. Smartwork is an online homework system that helps students practice applying organic chemistry, which in turn helps them to retain it. The system offers over 4,000 interactive questions —all with hints, feedback, and ebook links—so that students receive coaching in real time.

Mechanism and Arrow-Pushing Problems

Over 1,100 graded mechanism problems that support the text’s organization and pedagogy.

Easy-to-use drawing tool and multistep problems and feedback

Multistep mechanism and synthesis problems are graded for each step and feedback is given for each step so that students know where they went wrong.

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Smartwork grades can report directly to your LMS gradebook, while individual and class-wide performance reports help you see students’ progress, identify challenging concepts, and intervene with students who struggled with those concepts.

Learn how our tools can be used before, during, and after your online or in-person class

1. course design.

Accessibility is central to Norton’s products. To meet the greatest range of requirements, we follow the Web Content Accessibility Guidelines (WCAG) and strive for WCAG 2.1 AA across all products.

On-demand support from a dedicated customer success manager who will consult on course design integrate our tools into your LMS, and provide ongoing support. In a recent survey, 91 percent of instructors felt supported or very supported using Norton learning tools.

2. Before Class

Students can read the interactive ebook with embedded videos exploring key skills and helping students visualize mechanisms and elementary steps as they are introduced. The ebook provides an active reading experience, featuring click-to-reveal answers for Your Turn exercises, as well as enabling students to take notes, bookmark, search, highlight, and read offline.

Students can also work problems in Smartwork with its intuitive 2D molecular drawing and multi-step tools to allow students to practice drawing mechanisms while receiving coaching in real time with answer-specific feedback.

Over 4,000 problems, including over 1,100 graded mechanism problems, support the text’s organization and pedagogy within Smartwork online homework. Get started quickly with our premade assignments for each chapter, plus new MCAT skill-building assignments, or take advantage of Smartwork’s flexibility by customizing questions and adding your own content.

3. During Online, Hybrid, or In-person Class

Norton Teaching Tools also includes activities, classroom demonstrations, and lab experiment suggestions for in-person, online, and hybrid learning environments.

In addition to the animations and videos that can be used during class time, the Solved Problem PowerPoint lecture slides allows for in-class group problem solving.

4. After Class

More than 80 videos and narrated animations on elementary steps, mechanisms, and important skills in organic chemistry. These videos are specifically designed to counter common student misconceptions and to be inclusive for all students. Like the book itself, the videos also help students to develop and apply critical thinking skills.

Our new Norton Teaching Tools provide all of the support resources instructors need to make the switch to an organization by mechanism and continually refresh their syllabus with creative, diverse resources. Dynamic and experienced instructors have created the wealth of resources in this searchable, sortable online repository.

Joel Karty’s Author blog, teachthemechanism.com is a platform for a community of instructors to share their experiences and insights, have open forum discussions, view sample materials, and watch videos of Joel.

Image Credits: (Devices) iStockPhoto.com/lvcandy Copyright © W. W. Norton & Company, Inc. 2021