A crystalline solid containing chemically bonded water molecules is heated until all the water is driven off, leaving a dry substance.
State the term used to describe a substance that contains no water of crystallisation.
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.