7.012/7.013/7.014
Chemistry Self-Evaluation:
The following problems are designed to indicate the level of chemistry required for Introductory Biology classes 7.012, 7.013, and 7.014. Answers are below.
- 1) Covalent bonds - number of bonds per atom/charge on atoms:
- What is wrong with the following structures? (correct the mistakes)

- 2) Bond types:
- What type of bond (ionic, covalent, hydrogen, VanDer Waals) is indicated by the
?

- 3) Hydrophobicity/Hydrophilicity:
- Which of the following would you expect to be water-soluble?

- 4) Thermodynamics
- Given the reversible chemical reaction where
:

Which of the following statements are true and which are false?
a) At equilibrium, [A]=[B]=[C]=[D].
b) Starting with [A]=[B]=[C]=[D]=1M, there will be a net reaction to the right.
c) Starting with [A]=1M, [B]=1M, [C]=0, and [D]=0, there will be a net reaction to the right.
d) Starting with [A]=0, [B]=0, [C]=1M, and [D]=1M, there will be a net reaction to the right.
Solutions
1) Covalent Bonds

2) Bond Types

3) Hydrophobicity/Hydrophilicity

- 4) Thermodynamics
- a) False
- b) True
- c) True
- d) False
