Airborne particulate matter was collected near a construction site.
The particle-size ranges are shown in the table.
| Particle-size category | Diameter range in nm |
|---|---|
| Nanoparticle | 1 to 100 |
| Fine particle | 100 to 2500 |
| Coarse particle | 2500 to 10 000 |
The measured diameters of three samples are shown in the table.
| Sample | Diameter in nm |
|---|---|
| A | 75 |
| B | 800 |
| C | 6500 |
Give the particle-size category for sample A.
Give the particle-size category for sample B.
Give the particle-size category for sample C.
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.