Acid has hydrogen in it.
The strength of acid is measured on the PH Scale.
It goes from 0 to 14.
0-1 is Red.
2-3 Orange
4-5 Yellow
6-7-8 Green
9-10 Blue
11-12 Indigo
13-14 Violet
A base is the opposite to an acid.
A base contain hydroxide (OH)
An acid and a base NEUTRALISE each other and make water
