Acids and bases are classes of materials that have different properties. Acid-base indicators change color depending on whether they are in acids or bases. Red cabbage leaves contain a substance ...

The color that a substance turns a pH indicator is a characteristic property of that substance. An acid can neutralize a base, and a base can neutralize an acid Students squeeze red cabbage leaves in ...

Acidic substances should make the cabbage indicator turn bright ... pigments are responsible for the red, purple and blue colours in some plants, including leaves, flowers and fruits.

Working in pairs, each pair made a different indicator from fruit and vegetables, including plum skin, turnip skin, red cabbage and raspberries. Pupils were able to decide whether to dissolve the ...