Is it an acid, base, or neutral? Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties.

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 ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids ... Then add 3-4 drops of 6M HCl and stir until the mixture ...

The pH scale measures how strongly ... vegetables and flowers can be used to make indicators just by mashing them in hot water. Red cabbage is one of the best, and can be compared to the colour ...