An air-monitoring station records the diameters of four particles in the air.
| Particle | Diameter |
|---|---|
| P | 75 nm75\ \text{nm}75 nm |
| Q | 1800 nm1800\ \text{nm}1800 nm |
| R | 3200 nm3200\ \text{nm}3200 nm |
| S | 12 000 nm12\ 000\ \text{nm}12 000 nm |
Which particle is a fine particle?
R
Q
P
S
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.