A bottle of spring water is labelled 'pure spring water'. The water in the bottle contains dissolved minerals.
Explain why the water in the bottle is not pure in the chemical sense.
Give one example of a formulation.
A fertiliser is made by mixing measured masses of three different salts.
Explain why this fertiliser is a formulation.
40 exam-style questions on AQA GCSE Chemistry 8.1 Purity, formulations and chromatography, covering 8.1.1 Pure substances, 8.1.2 Formulations, and 8.1.3 Chromatography. Each one has a worked solution and a mark scheme showing where the marks go.