A student is determining the density of an irregularly shaped piece of basalt. Which equation should the student use to calculate the density of this solid?
density=volumemass\text{density} = \frac{\text{volume}}{\text{mass}}density=massvolume
density=mass×volume\text{density} = \text{mass} \times \text{volume}density=mass×volume
density=massvolume\text{density} = \frac{\text{mass}}{\text{volume}}density=volumemass
density=mass−volume\text{density} = \text{mass} - \text{volume}density=mass−volume
55 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.