Most metals are found in the Earth as oxides. What must be done to an oxide to obtain the metal from it?
The oxide must be filtered.
The oxide must be dissolved.
The oxide must be crystallised.
The oxide must be reduced.
86 exam-style questions on AQA GCSE Chemistry 4.1 Reactivity of metals, covering 4.1.1 Metal oxides, 4.1.2 The reactivity series, 4.1.3 Extraction of metals and reduction, and 4.1.4 Oxidation and reduction in terms of electrons. Each one has a worked solution and a mark scheme showing where the marks go.