A student investigated the density of different decorative stones.
To find the volume of a stone, she used a displacement can filled with water up to the spout, submerged the stone, and collected the overflow in a measuring cylinder.
The student measured the volume of one stone three times. The three measurements were:
15.2 cm3,15.2 cm3,15.8 cm3 15.2\text{ cm}^3, \quad 15.2\text{ cm}^3, \quad 15.8\text{ cm}^3 15.2 cm3,15.2 cm3,15.8 cm3Calculate the mean volume of this stone.
A second stone has a mass of 42.0 g and a volume of 15.0 cm3.
Calculate the density of this second stone in g/cm3\text{g/cm}^3g/cm3.
Use the equation:
density=massvolume \text{density} = \frac{\text{mass}}{\text{volume}} density=volumemass22 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.