Samples P and Q are two different forms of carbon. The same force was applied to each sample using a pointed tool.
| Sample | Number of neighbouring carbon atoms joined to each carbon atom | Depth of indentation in sample in µm |
|---|---|---|
| P | 4 | 0.3 |
| Q | 3 | 15.2 |
A manufacturer needs to coat blades used to mix a suspension containing hard mineral particles.
State which sample has the structure of diamond.
Explain why the sample stated in part (a) is more suitable for coating the blades than the other sample. Use information from the table.
68 exam-style questions on AQA GCSE Chemistry 2.3 Structure and bonding of carbon, covering 2.3.1 Diamond, 2.3.2 Graphite, and 2.3.3 Graphene and fullerenes. Each one has a worked solution and a mark scheme showing where the marks go.