A polished metal surface is left exposed to oxygen. The surface becomes dull because the metal reacts.
Give the type of compound produced when the metal reacts with oxygen.
During this change, oxygen is added to the metal.
State whether the metal is oxidised or 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.