An air sampler at a pottery separates airborne clay particles into three samples.
1 nm = 1 × 10⁻⁹ m
| Particle category | Diameter range in nm |
|---|---|
| Nanoparticle | 1 to 100 |
| Fine particle | 100 to 2500 |
| Coarse particle | 2500 to 10 000 |
Each sample contains particles of the diameter shown.
| Sample | Diameter in m |
|---|---|
| A | 8.0 × 10⁻⁸ |
| B | 1.6 × 10⁻⁶ |
| C | 6.0 × 10⁻⁶ |
Which sample can be called dust?
Explain your answer. Refer to all three samples in your answer.
104 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.