This educational film explores acid-base indicators and their color changes ... The film explains the chemical reactions involved, particularly focusing on bromothymol blue as an indicator ...

In this is acidic baking soda acts as a base, with a pH of 9, while vinegar is the acid, with a pH of 2 or 3. The pH scale ranges from 0.0 to 6.9 for acids, 7.0 for neutral, and 7.1 to 14.0 for bases.

Through this experiment, you'll learn to identify acids and bases in everyday substances by observing their interaction with a natural indicator.

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, a reaction makes the indicator molecule change shape ...

A number of characteristic observations can be made for these reactions. In these experiments you will measure temperatures increase and test hydrogen and carbon dioxide gases produced in acid ...

A titration experiment ... chemical reactions. This technique is commonly used in neutralisation reactions and can also be used to calculate an unknown concentration (of either the acid or alkali).