2. 2-2 Class Review

3. 1. What does pH stand for? A. Phosphorus hydrogen B. Power of Hydrogen C. Potassium Hydrogen D. Pure Hydrogen

4. 2. Write the equation in which water becomes ions? A. H 2 O H + + OH — B. H+ + OH - H 2 O

5. 3. What is H+? A. Hydrogen B. Hydrogen Plus C. Hydrogen Negative Ion D. Hydrogen Positive Ion

6. 4. What is OH- ? A. Oxygen-Hydrogen B. Hydroxide Negative Ion C. Oxide Hydrogen Negative Ion D. Carboxyl Negative ion

7. 5. In a chemical equation, what is listed before the arrow? A. Reactants B. Products C. Cupid

8. 6. In this CHEMICAL EQUATION list the products only? (As written) H 2 O H + + OH — A. H 2 O B. H+ and OH — C. H+ D. OH —

9. 7. The pH scale ranges from 0 to___ A. 7 B. 10 C. 14 D. -7

10. 8. What does a pH of 7 mean, in relation to H+ and OH- ions? A. More H+ ions than OH- B. Less H+ ions than OH- C. Equal H+ ions and OH-

11. 9. Give an example of a substance that has a pH of 7. A. Orange Juice B. Bottled Water C. Creek Water D. Milk

12. 10. These substances have a pH below 7 and have more H+ ions than OH- a.Acids b.Bases c.Neutral d.None of these

13. 11. These substances have a pH above 7 and have more OH- ions than H+. A. Acids B. Bases C. Neutral D. None of these

14. 12. Give an example of an acid A. Soap B. Bleach C. HCl D. Sea Water

15. 13. Give an example of a base A. Milk B. Bleach C. Ketchup D. Lemon Juice

16. 14. What are buffers? A. Make things shiny B. Weak acids or bases C. Water and non dissolved material D. None of these