Watch the videos below on organic macromolecules. You are responsible for the information in the videos for Friday's quiz. Use the copy of the slideshow to jot down notes while watching the videos. Also write down any questions you have for class. Click below for a link to the videos:

Carbohydrates (part 1)
Carbohydrates (part 2)
Amino acids and Proteins

Assignment for 10/31
Your assignment is to watch these videos before class on Monday - come to class with any questions you have or post your question in the discussion forum (see bottom of this page in red). It will be assumed that you have watched these videos as we go into Thursday's class and into a two day water lab. If you do not watch these videos and take notes before class, you will be far behind where you need to be in order to do this lab.

Video Lessons
Each video is a continuation of the previous one. In total this is a 25 minute lesson on basic chemistry and chemical bonding. Take notes as you would in class, but you can pause and rewind videos allowing you to work at your own pace and comfort level.

Video 1
Video 2
Video 3
Video 4
Video 5

After watching these videos, you should be able to answer the following questions below:
1. What sub-atomic particles determine the mass of an atom?
2. What determines how one atom will interact with another atom?
3. What are valence electrons and why are they important?
4. What is the octet rule? What are three ways that an atom can achieve stability and satisfy the octet rule?
5. What is an ion? How does an ion form?
6. What is the attraction between two oppositely charged ions called?
7. What is the attraction called between two atoms that are sharing electrons to achieve stability?
8. What must happen in order for a covalent bond to be considered polar? What about nonpolar?
9. When a bond is polar, why is one side of the molecule slightly negative and the other slightly positive?
10. What information about the composition of a molecule does the molecular formula provide?
11. If a molecule is polar, what would be true about the charge at opposite ends of the molecule? (in other words, would the ends of the molecule have no difference in charge OR would one end by slightly positive and the other end slightly negative?)

If you have any questions after watching the video, click the discussion tab above and post your question. I may respond to some, but remember if you can successfully answer someone else's question, you will earn 2/2 points.