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 ...

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 ...

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 ...

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 ...