A technician prepares equal volumes of a solid reactant in five different ways.
| preparation | number of cubes | side length of each cube in cm |
|---|---|---|
| P | 216 | 1 |
| Q | 64 | 1.5 |
| R | 27 | 2 |
| S | 8 | 3 |
| T | 1 | 6 |
Which preparation has a total surface area and a surface area to volume ratio that are both half those of preparation P?
preparation R
preparation T
preparation S
preparation Q
122 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.