Making Salts — AQA GCSE Combined Science: Synergy 8465
AQA GCSE Combined Science: Synergy · 8465
Making Salts
What you need to know
Describe neutralisation as the reaction of an acid with an alkali or base to form a salt and water.
Understand that acids are neutralised by soluble and insoluble metal hydroxides, metal oxides, and metal carbonates.
Predict the particular salt produced in a reaction based on the acid used (hydrochloric acid produces chlorides, nitric acid produces nitrates, sulfuric acid produces sulfates) and the positive ions in the base, alkali, or carbonate.
Describe the processes of making soluble salts from acids by reacting them with solid insoluble substances and filtering off the excess solid.
Explain and exemplify the processes of filtration and crystallisation to produce solid salts from salt solutions.
Suggest suitable purification techniques given information about the substances involved in a reaction.
Prepare a pure, dry sample of a soluble salt from an insoluble oxide or carbonate using a Bunsen burner, water bath, or electric heater.
