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 ...

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.