Name: ______________________

Period: ______________________

Section: ______________________

Grade: __________/20 points

1/30/02, 1/31/02 Regular Chemistry Homework

Read pages 266-273 in Chapter 8 of your book.

Answer the following questions pertaining to that material:

1) In a polar bond how are the electrons shared? How are the electrons pulled? What are dipoles? Dipoles are only found in what type of molecules?

2) What must you look at in order to determine polarity? Look at figure 8-16, explain why formaldehyde is polar? Explain what the arrows represent in the diagram.

3) Look at figure 8-17, a model of carbon dioxide, explain whether it is polar or nonpolar, and explain what the arrows represent.

4) Examine figure 8-19, why is water polar? Does water have separate positive and negative ends? Why?

5) What is a protein? What makes up proteins? How does the protein go together? Explain how the polarities of a protein help for the shape of it.

******This is the last assignment before the test, your study guide will due on February 5^th and February 6^th respectively.