1. Acids and Bases Chapter 23

2. Acids and Bases
found in every home
Some are corrosive
Range in strength from weak to strong

3. Common acids at home
Orange, tomato, lemon, lime
Soft drinks
aspirin

4. Common bases in the home
Drain opener Draino
Shampoo
Baking soda
ammonia

5. Properties of acids When mixed with water produce H+ ions
Chemical formula begins with H
Can be corrosive
Sour taste
Weak or strong
Ph scale 0-7
Change indicators colors
Donates + protons

6. Properties of Bases Form OH- when mixed with water Slippery to touch
Corrosive
Bitter taste
pH scale 8-14
Turn indicators certain colors
Accepts + protons

7. Acids and Bases
23.1
An indicator is an organic compound that changes color in acid and base.
For example, the indicator litmus paper turns red in acid and blue in bases.

8. Some common indicators
Cabbage juice.. Range of colors
pH paper.. Very specific
Universal paper.. Very specific
Litmus paper.. Red or blue
Phenolphthalein.. Clear or pink
Brom thymol blue.. Blue or yellow

9. Tool used to show if a substance is an acid or base - Very general
pH scale
Tool used to show if a substance is an acid or base - Very general

11. Scale from 0-14 7 is neutral Below 7 is an ACID Above 7 is a BASE
Ph Scale
Scale from 0-14
7 is neutral
Below 7 is an ACID
Above 7 is a BASE

12. Strong acids have a pH of below 3
Strong bases have a pH of above 12

14. Ph scale measures the concentration of H+ ions in a solution.
Many H+ ions make it an acid
Less H+ ions and more OH- ions makes it a base

15. Neutralization Acid + base = water and salt NaOH + HCl NaCl + water
Process of combining an acid and base to make a neutral salt and water

16. Buffers are solutions containing ions that react with additional acids or bases to minimize their effects on pH.
We have buffers in our stomachs and blood.