A student has three metal cubes, P, Q and R.
The Table shows her measurements.
Table
| Cube | Length of each side in cm\text{cm}cm | Mass in g\text{g}g |
|---|---|---|
| P | 2.0 | 21.6 |
| Q | 3.0 | 72.9 |
| R | 2.0 | 71.2 |
Use the equation: density=massvolume\text{density} = \dfrac{\text{mass}}{\text{volume}}density=volumemass
Calculate the volume of cube Q.
The student says:
'Cubes P and Q could be made of the same metal.'
Use calculations to show that the student could be correct.
Cube R is the same size as cube P, but it has a much greater mass.
Suggest two reasons why, in terms of the atoms in each metal.
44 exam-style questions on OCR GCSE Physics 1.1 The particle model, covering 1.1.1 Development of the atomic model, 1.1.2 Structure of the atom, 1.1.3 The size of atoms and small molecules, 1.1.4 Density, 1.1.5 Density and the states of matter, and 1.1.6 Density, mass and volume. Each one has a worked solution and a mark scheme showing where the marks go.