Acid has Hydrogen in it.
The strength of Acid is measured on the pH scale.
It goes from 0 to 14
0-1 red
2-3 orange
4-6 Yellow
7 Green
8-10 Blue
11-12 Indigo
13-14 Violet
A base is an opposite chemical to an acid
A base contains hydroxide (OH)
An acid and a base NEUTRALISE each other and make water
Here is a photo of what it's like.
