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Chapter #7 Study Guide
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1. Regarding the salts in the ocean:
a) Where do the salts from the ocean come from and where do they go?
b) What are excess volatiles?
c) What is meant by our oceans being in chemical equilibrium?
d) What do salts do to the heat capacity, freezing point and evaporation rates of water?
e) What are the two most abundant salts in the ocean?
f) What is meant by residence and mixing time?
g) Why does water dissolve salts and not oil?
h) What is an ion?
i) What is a molecule?
j) What kind of bond holds salts together?
2. Regarding gases in the ocean:
a) How does oxygen and carbon dioxide change as you go deeper? Describe why this happens.
b) What are the sources and sinks for oxygen, carbon dioxide and nitrogen in our ocean?
c) What is meant by solubility?
d) How does temperature and pressure affect the solubility of gas?
e) What happens to pH (see below) when excess CO2 enters the ocean?
3. Regarding pH:
a) What does the pH scale tell you about the acidity or alkalinity of water?
b) What is the pH of pure water?
c) What is the pH of our ocean and why?
d) How does the acidity or alkalinity change as you go from one number to the next?
e) What does a buffer do?
