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 ...

Acidic substances should make the cabbage indicator turn bright ... the pigment has a red/pink appearance. This explains the bright result of our lemon juice test. Equally, at lower concentrations ...

Check out the cool chemistry stuff you can do with a red cabbage! Add about 1 cup of water ... But when acid in the lemon juice gets in the water a reaction makes the indicator molecule change so the ...

The pH of several common household items is observed using universal indicator and pH standards for reference. Prepare desired household chemicals, ie: vinegar, soap, ammonia, lemon juice, clear soda ...