Antacid tablets contain bases such as magnesium hydroxide and magnesium carbonate to neutralise the extra acid. When an acid is added to an alkali the pH of the acid increases towards 7 and the pH ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

This is measured using the pH scale, which runs from pH 0 to pH 14 ... is any compound formed by the neutralisation of an acid by a base or an alkali. It does not just refer to table salt.

Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

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 ...