A manufacturer can use one of four batches of cube-shaped ceramic particles to make a coating.
| Batch | Side length of each particle (nm) |
|---|---|
| J | 4 |
| K | 10 |
| L | 25 |
| M | 50 |
Which batch contains particles with the largest surface area to volume ratio?
Batch M, with a side length of 50 nm.
Batch J, with a side length of 4 nm.
Batch K, with a side length of 10 nm.
Batch L, with a side length of 25 nm.
122 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.