1. What makes a water molecule polar?
2. Draw a model that shows how molecules in liquid water generally arrange
themselves relative to one another.
3. Distinguish between polar and nonpolar molecules.
4. Would you select ethanol, water or lamp oil to dissolve a nonpolar
molecule? Explain
5. With increasing water temperature, how does the solubility of oxygen
change?
6. Using the graph on page 77, determine
a. which type of fish requires more dissolved oxygen in water in the
winter than in the summer?
b. how much more dissolved oxygen in water is required by yellow perch
in the summer than in the winter.
.
.