1. Section 3-2 Acids and Bases

2. Terms to know Indicator: a substance that changes color in the presence of an acid or a base Corrosive: destroys body tissue, clothing, etc

3. 3.2 Acids and Bases Acid Any compound that increases hydronium ions (H 3 O + ), when dissolved in water H + ions separate from acid and bond with H 2 O Examples: HCl, H 2 SO 4

4. 3.2 Acids and Bases Properties of Acids 1) Taste Sour Citrus fruit 2) Change Color of Indicator Blue litmus paper turns red Bromothymol blue turns yellow

5. 3.2 Acids and Bases Properties of Acids continued 3)React w/ some metals H gas is formed 4)Conduct Electric Current Form ions in solution so current can be conducted 5)May be corrosive

6. 3.2 Acids and Bases Uses of Acids Foods Citric acid and ascorbic acid in orange juice Drinks Carbonic and phosphoric acid in soft drinks

7. 3.2 Acids and Bases Uses of Acids Industry Detergent, fertilizers, plastics, perms or chemical straighteners Body Hydrochloric acid in your stomach

8. 3.2 Acids and Bases Bases Any compound that increases the amount of hydroxide ions (OH - ) when dissolved in water Examples: NaOH, Ca(OH) 2

9. 3.2 Acids and Bases Properties of Bases 1) Taste Bitter Soap, if you’ve ever tasted 2) Feel Slippery

10. 3.2 Acids and Bases Properties of Bases continued 3) Change Color of Indicator Red litmus paper turns Blue Bromothymol Blue turns deep blue 4) Conduct Electric Current Because of ions in solutions 5) May be corrosive

11. 3.2 Acids and Bases Uses of Bases Industry NaOH to make soap and paper Ca(OH) 2 for cement and plaster Cleaners Ammonia, baking soda, bleach Antacids Alka-seltzer, Tums