A substance with a pH of 10 is called

a

O water.

O a base.

O neutral.

an acid.

Answer: A base

Explanation: pH is the measure of the alkalinity or acidity of a substance. In a pH scale, the values ranges from 1 to 14, substances having lower pH values are said to be more acidic while substances with higher pH values are more alkaline or basic. Substances that have pH value of 7 is said to be neutral. pH values ranging from 1 to 6 is acidic while pH values from 8 to 14 is alkaline or basic.

That would be an acid, bleach is an 11 on the scale to roughly give you an idea.