Lead is obtained from lead(II) oxide by heating the oxide with carbon.
2PbO+C→2Pb+CO22\text{PbO} + \text{C} \rightarrow 2\text{Pb} + \text{CO}_22PbO+C→2Pb+CO2
Which substance is reduced in this reaction? Give one reason for your answer in terms of oxygen.
Which substance is oxidised in this reaction? Give one reason for your answer in terms of oxygen.
Suggest why lead can be obtained from its oxide in this way but calcium cannot.
39 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.