2. describe the properties of acids and bases? be able to read a ph scale, and understand what it represents describe neutralization

3. Properties of Acids Many common items contain acids. Acids are compounds with specific characteristic properties. Reacts with metals Reacts with carbon (seashells, eggs, chalk, limestone) Tastes sour (lemons, grapefruit, oranges, vinegar, tomatoes) Turns blue litmus paper (an indicator) red Corrosive

4. Importance of Acids Folic acid- found in green, leafy vegetables, used for cell growth. Hydrochloric acid- in your stomach, helps with digestion Phosphoric acid- used to make plant fertilizers Sulfuric acid- drives many type of batteries, giving it the nickname "battery acid."

5. Properties of Bases Many common items contain bases. Bases are often described as having properties opposite of acids. Tastes bitter (melons, almonds, cocoa beans) Turns red litmus paper (an indicator) blue *remember: bases turn blue. Feel slippery (soaps, detergents, shampoo) Doesn't react with metals

6. Importance of Bases Ammonia- used in fertilizers and household cleaners Baking soda- causes baked goods to rise Soaps/detergents- contain bases

7. (Basic) To determine the strength of an acid or base, chemists use a scale called pH. It ranges from 0-14. The most acidic substances are found at the low end of the scale (0-6). The most basic substances are found at the high end (8-14). A pH of 7 represents an item that is neither acid or base- neutral. Ex: water

8. We can find the pH of a solution using something called indicator paper, which changes a certain color for each pH value. Matching the color of the paper with the colors on the scale tells us the solutions pH. 7= basic (alkaline) 7 = neutral

9. Neutralization A reaction between an acid and a base. After mixing an acid with a base, the mixture is not as acidic or basic as the individual starting solutions were. The reaction may even result in a neutral solution. The final pH depends on the concentrations and strengths of the reactants. For example, a small amount of a strong base reacts with a very large amount of strong acid. The solution will remain more acidic, but closer to neutral than the original pH.

22. Acid rain info & pH of water near Lakota Acid and base litmus paper lab properties of acids lab properties of bases lab pHone home lab two acids and base cut and paste activities