Density
3 marks · NormalA student investigates the density of three liquids by measuring their mass and volume. Her results are shown below.
| Liquid | Mass (g) | Volume (cm³) | Density (g/cm³) |
|---|---|---|---|
| A | 50 | 40 | |
| B | 60 | 50 | |
| C | 30 | 25 |
Complete the table by calculating the density of each liquid. Show your working.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
Must show: A: 1.25 g/cm³, B: 1.2 g/cm³, C: 1.2 g/cm³
Also accept: densities given to 2 or 3 significant figures
Common mistakes: Mixing up columns; Incorrect division
Show mark scheme and worked solution
Marking points
A1 · 1 mark · Correct density for liquid A.
A2 · 1 mark · Correct density for liquid B.
A3 · 1 mark · Correct density for liquid C.
Worked solution
Density = mass / volume.
A: 50 g / 40 cm³ = 1.25 g/cm³
B: 60 g / 50 cm³ = 1.2 g/cm³
C: 30 g / 25 cm³ = 1.2 g/cm³
| Liquid | Mass (g) | Volume (cm³) | Density (g/cm³) |
|---|---|---|---|
| A | 50 | 40 | 1.25 |
| B | 60 | 50 | 1.2 |
| C | 30 | 25 | 1.2 |