Acid has Hydrogen in it.
The strength if acid is measure on the pH scale.
It goes 0 to 14.
0-1 red
2-3 Orange
4-6 Yellow
7 Green
8-10 blue
11-12 Indigo
3-14 Violet
A base is the opposite chemical to an acid.
A base contain hydroxide. ( OH )
An acid and a base neutralise each other and makes water
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