Neutralisation also moves the pH of an alkali down towards seven. Several different bases ... Watch this video of a practical demonstration in which copper carbonate and sulfuric acid react ...

Can be used to recap on acids, alkalis and bases or could lead into a classroom discussion on chemical changes and structures.

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 ...