You will need to copy these into your Science notebook.
The Basics of Acids (and Bases)!

The pH Scale





◦
◦
◦
Acids
pH less than 7
Sour taste
Reaction with some metals
Examples:
 Lemon Juice
 Vinegar
 Black coffee
 Orange Juice
Bases
pH greater than 7
Bitter taste
Slippery feel
Examples:
 Baking soda
 Soapy water
 Bleach
Litmus Paper – Turns red in an acid, turns blue in a base, turns violet in a neutral solution
Phenolphthalein – Tests for a base, turns magenta in a base, colorless in an acid or neutral solution
pH paper – range of colors depending on pH, compare the color of paper to the chart
You will need to copy these into your Science notebook.
The Basics of Acids (and Bases)!

The pH Scale





◦
◦
◦
Acids
pH less than 7
Sour taste
Reaction with some metals
Examples:
 Lemon Juice
 Vinegar
 Black coffee
 Orange Juice
Bases
pH greater than 7
Bitter taste
Slippery feel
Examples:
 Baking soda
 Soapy water
 Bleach
Litmus Paper – Turns red in an acid, turns blue in a base, turns violet in a neutral solution
Phenolphthalein – Tests for a base, turns magenta in a base, colorless in an acid or neutral solution
pH paper – range of colors depending on pH, compare the color of paper to the chart