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3.1 Changes of state and the particle model

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Question 7
H

A hollow steel ball has an outside volume of 90 cm3. The hollow space inside the ball has a volume of 65 cm3 and contains only air. The density of steel is 7.8 g/cm3.

a.

Calculate the volume of steel in the ball.

[1]
b.

Calculate the mass of the ball. Ignore the mass of the air inside the ball.

[3]
c.

Calculate the average density of the ball. Use the outside volume of the ball.

[2]
d.

Explain why the average density of the ball is much lower than the density of steel.

[2]
Markscheme

3.1 Changes of state and the particle model Questions

  1. GCSE
  2. /Physics
  3. /3.1 Changes of state and the particle model

40 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.

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