acid has hydrogen in it
the strength of the acid has measured the ph
it goes 0 to 14 which mean each colour has there own number
red 0 to 1
orange 2 to 3
yellow 4 to 6
green 7 to 8
blue 9 to 10
indigo 11 to 12
violet 13 the 14
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
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