Rust is hydrated iron(III) oxide. Which pair of substances reacts with iron to produce rust?
Water and carbon dioxide
Oxygen and carbon dioxide
Hydrogen and oxygen
Oxygen and water
118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.