1. Lewis
Structures
Lesson Three

2. Lewis Structure
Lewis structures of molecules show how atoms are bonded
Let’s work through this tutorial first to learn a technique, then you will be allowed to work in groups to solve more problems
Tutorial: Tutorial
Group work:
Complete five Lewis structures from this tutorial to hand in:
Independent Work

3. Summary Steps to create a Lewis Structure:
1. count the number of valence electrons
2. least electronegative atom is placed in the middle
3. set up a skeleton of the structure
4. draw a single bond in between each atom
5. count the amount of valence electrons left
6. make each atom have an octet, remembering the rules of single, double, triple, and lone pairs
7. count the number of electrons in your final product to ensure you’ve drawn a correct structure

4. Homework
With a partner or group, create a movie in windows movie maker for an assigned Lewis structure
Groups can have no more than four people
Be as CLEAR and creative as possible
Feel free to add sound through the movie program
Example:
HCO3-
You do not need to be as specific, but make sure that you’ve explained how to create your Lewis structure

5. Instructions
In paint, or another media creatable program, illustrate each step for the creation of your structure
Open windows movie maker or another compatible program such as imovie
In windows movie maker, push import media and upload the images
Drag them into the storyboard below
You can customize transitions and settings
If you wish to add sound to the visuals, you may do so through tools, narrate timeline
Upload to the wikispace page named Lewis structures using the given password and login

6. Instructions Cont.
On each other’s, feel free to add comments and critiques if you’ve thought of an alternative structure
This will help in aiding each other as well as introducing the next topic of resonance structures for atoms
Feel free to help each other, but no one student should be doing all the work in the group