Question

Which best describes the pH scale?

Acids measure below 7.
Bases measure below 7.
Acids and bases measure above 7.
Bases and acids measure at 7.

Answer 1

A balance of pH that is below 7 is considered an acid, above... obviously a base

Answer 2

Answer: The correct answer is Acids measure below 7.

pH ( Potential of hydrogen) is used to measure the basicity ( alkalinity) or acidity of water soluble substances.

The value on pH scales lies from 0 to 14 where 7 indicates a neutral pH that corresponding to neutral solutions like water.

Any value below 7 indicates that the solution is acidic ( like Hydrochloric acid) and above 7 indicates that the solution is alkaline ( base like sodium hydroxide).

Thus, acids measure below 7 is the right answer.