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CAIE A-Level Physics AS 4.3.1 Density Questions

Calculate and compare density as mass per unit volume for solids, liquids and gases.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Calculate and compare density as mass per unit volume for solids, liquids and gases.

CAIE A-Level Physics AS 4.3.1 Density Questions question 1

[Maximum number: 1]

The diagram shows the arrangement of atoms in a particular crystal.

Figure for Question CAIE A-Level Physics AS 4.3.1 Density Questions question 1 — CAIE A-Level Physics AS

Each atom is at the corner of a cube.
The mass of each atom is 3.5×10−25 kg3.5 \times 10^{-25} \mathrm{~kg}. The density of the crystal is 9.2×103 kg m−39.2 \times 10^{3} \mathrm{~kg} \mathrm{~m}^{-3}.
What is the shortest distance between the centres of two adjacent atoms?

A

3.8×10−29 m3.8 \times 10^{-29} \mathrm{~m}

B

6.2×10−15 m6.2 \times 10^{-15} \mathrm{~m}

C

3.4×10−10 m3.4 \times 10^{-10} \mathrm{~m}

D

3.0×10−9 m3.0 \times 10^{-9} \mathrm{~m}

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