1. Acids, Bases, and pH

2. Acids Produces H + in water forming H 3 O + ions (hydronium) Corrosive Sour Feels squeaky Conduct electricity: stronger the acid the more current Ex. Battery acid, oranges, coke, vinegar

3. Bases Produces OH - (hydroxide) ions in water Corrosive Bitter, chalky Slippery Conducts electricity; stronger the base the stronger the current Ex. Milk, soap, cleaners, baking soda, bleach

4. Indicators Indicates an acid or base EX. pH paper, litmus paper, or red cabbage juice Acids turn blue litmus paper red Bases turn red litmus paper blue

5. pH Scale pH scale measures H 3 O + ions from 0-14 0 = strong acid 6 = weak acid 7 = neutral 8 = weak base 14 = strong base

6. Acid Rain Plants and animals need water close to neutral = 7 Pollution causes acid rain (>5.6) More damage done to Roman ruins & pyramids in last century than in the last 2000 years