Metal X is obtained by heating its oxide with carbon. All of the metal oxide and carbon react.
| Substance before heating | Mass before heating in g | Substance after heating | Mass after heating in g |
|---|---|---|---|
| Metal X oxide | 12.0 | Metal X | 9.60 |
| Carbon | 0.900 | Carbon dioxide | 3.30 |
Calculate the mass of oxygen transferred during the reaction.
Explain why the reaction is a redox reaction.
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.