Important Topics
1. Liquids behave as if they were composed of small particles in motion.
2. This is shown by (1) Diffusion, (2) Solution, (3) Evaporation, (4) Expansion, (5) Osmosis.
Exercises
1. Give an example or illustration of each of the five evidences of molecular motion in liquids.
2. When is air saturated? What is the explanation?
3. Why does warming a liquid increase its rate of evaporation?
4. Air molecules are in rapid motion in all directions. Do they enter a liquid with a surface exposed to the air? Give reason.
5. What are some of the inconveniences of living in a saturated atmosphere?
6. Fish require oxygen. How is it obtained?