Scientists compare two separate samples of the same solid before exposing them to a gas. The particles are cubic and all their surfaces are available for reaction.
| Sample | Side length of each particle in nm | Number of particles |
|---|---|---|
| P | 5 | 1000 |
| Q | 10 | 125 |
Calculate the total surface area of the particles in each sample and explain which sample provides more surface area for reaction.
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.