Acidity
From PLANTFACTS.OSU.EDU
1. quality of being sour; degree of sourness; having a pH of less than 7.

A sample chart of acids and bases.
Source: http://www.wfhss.com/html/educ/sbasics/sbasics0102_en.htm
1. quality of being sour; degree of sourness; having a pH of less than 7.

A sample chart of acids and bases.
Source: http://www.wfhss.com/html/educ/sbasics/sbasics0102_en.htm