Acids and bases can change the color of substances called acid-base indicators. Red cabbage contains a chemical called anthocyanin. This pigment is a natural acid-base indicator. It is blue in neutral ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

A pH or acid-base indicator is a compound that changes color depending on the pH of the substance that is added to it. Acids and bases make pH indicators turn different colors. Two substances that ...