revealing whether substances are acids or bases through beautiful color changes. pH is a measure that tells us how acidic or basic a substance is, using a scale from 0 to 14. Acids (like lemon juice) ...

The pH scale goes from 0 to 14 with pH 7 as the neutral point ... A second method which is simple and easy but less accurate then using a pH meter, consists of using certain indicators or dyes. Many ...