A support for an electrical heating element will be used inside a kiln at 800 °C. The support must remain rigid and must not conduct electricity. Tests were carried out on four materials.
| Material | Remains rigid after 2 hours at 800 °C | Conducts electricity |
|---|---|---|
| Soda-lime glass | No | No |
| Clay ceramic | Yes | No |
| Thermosetting polymer | No | No |
| Stainless steel | Yes | Yes |
Which material meets both requirements for the support?
Soda-lime glass
Clay ceramic
Thermosetting polymer
Stainless steel
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.