Make an acid-base indicator. Dr Yan uses some very colourful science to find out what's acidic in his kitchen. Take 1/4 red cabbage ... we measure acidity: the pH scale. The scale spans from ...

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 ...

Discover how red cabbage can act as a natural pH indicator, revealing whether substances are acids or bases through beautiful color changes. pH is a measure that tells us how acidic or basic a ...

Blue flowers indicate acidic soil while pink flowers indicate alkaline. Plenty of other plants can be used as pH indicators for solutions, like red cabbage and butterfly pea flowers. But ...