On a separate sheet of paper, answer the following questions.

1. Use electronegativity to explain ionic, covalent and polar covalent bonding.

2. How does acid rain develop and explain what problems it might cause aquatic life, plant life, old and new building structures and human health.

3. Explain why this statement is true...life on this planet would not be possible if water were not a polar molecule.

4. Describe the difference between adhesion and cohesion; then, use cohesion to explain surface tension.

5. How do detergents make the "universal solvent" better at cleaning?

6. Explain the following pollutants; chemical, physical, radioactive and pathogenic.

7. How does water become "potable" and how is it purified?

8. Explain how we can have a water shortage when Earth is known as a "water planet"?

9. There were two "oil shocks" in the seventies, one in 1973 and another in 1979. Explain what caused the shocks and what effect it had on the American public and economy. Please suggest a realistic way our country can save ourselves from this type of disaster again.

10. Explain why ozone is called a "Dr. Jekyll and Mr. Hyde" when it comes to pollution.

11. What is the difference between primary and secondary pollutants? What are the primary pollutants and where do they come from?

12. Explain the following statement: All greenhouse gases are pollutants, but not all pollutants are greenhouse gases.

13. Explain how fossil fuels are formed.

14. What types of petroleum were discussed in the article...like "Texas Sweet" and where do these different major sources occur?

15. What are the different types of coal and what are the positives and negatives associated with each?