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 ...

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 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).

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

Making salts Acids react with metals, bases and carbonates to produce salts. Neutralisation is the reaction between an acid and a base. Titration and calculations Titration is a method used to ...

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.