Which statement describes what corrosion is?
The destruction of materials by chemical reactions with substances in the environment
The change of a material from a solid into a liquid when it is strongly heated
The mixing of a metal with other elements to produce a more useful material
The breaking down of a material into smaller pieces by repeated physical forces
40 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.