Red cabbage contains a chemical called anthocyanin. This pigment is a natural acid-base indicator. It is blue in neutral substances, like plain water. When an acid like lemon juice gets in the water, ...

Discover how red cabbage can act as a natural pH indicator, revealing whether substances are acids ... using a scale from 0 to 14. Acids (like lemon juice) have low pH values, while bases (like bleach ...

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 ...

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 ... a pH higher than 7 is basic. Our test implies that lemon juice ...

What is your conclusion? Is it acidic or basic? Red cabbage juice is an indicator. When it comes into contact with a base, like baking soda, it turns blue/purple. When it's mixed with an acid ...

This produces a beautiful purple juice. Red cabbage juice is commonly used as a pH indicator, or a compound that changes color when added to a solution to indicate whether that solution is acidic ...