... >> Natural Science >> Chemistry >> Acid Base Indicator/Reaction
Acid Base Indicator/Reaction
Definition: A compound that changes color on the basis of the pH of the solution in which it is dissolved. The color change is often a result of structural changes due to protonation or depronation of acidic groups within the compound.
Source: Kelter P, Mosher M, and Scott A (2008). Chemistry: the Practical Science. New York: Houghton Mifflin Company.