pH scale

pH scale

A 1 to 14 scale that measures alkalinity or acidity: pH7 is neutral, below 7 is acid and above 7 is alkaline.

Thesaurus

Noun

1.

pH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);pHhydrogen ion concentration - the number of moles of hydrogen ions per cubic decimeteracidity - pH values below 7alkalinity - pH values above 7neutrality - pH value of 7chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions