understand the core ideas about acids and bases; explain how the key ideas of acids and bases develop at more advanced levels; identify common misconceptions and know how these can be addressed or how ...

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.

A neutralisation reaction is one in which an acid reacts with a base to form water. A salt is also formed in this reaction. Bases are metal oxides, metal hydroxides and metal carbonates.