The table shows the masses and volumes of four samples.
| Sample | Mass in g\mathrm{g}g | Volume in cm3\mathrm{cm^3}cm3 |
|---|---|---|
| P | 72 | 30 |
| Q | 96 | 40 |
| R | 120 | 40 |
| S | 144 | 80 |
Which pair has the same density?
P and R
Q and S
R and S
P and Q
87 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.