Skip to content

Course home

Sign up

3.2 Internal energy and energy transfers

EasyMediumHard
1234567
Question 5
F

A pure substance is heated at a constant rate from solid to gas. The figure shows how the temperature of the substance changes with time.

Figure: A graph of temperature against time for a pure substance heated at a constant rate

image

a.

Use the graph to determine the melting point of the substance.

[1]
b.

Give the section of the graph during which the substance is boiling.

[1]
c.

Explain why the temperature of the substance does not change during section X.

[2]
d.

The substance is heated at the same constant rate throughout.

Suggest why section Z lasts longer than section X.

[1]
Markscheme

3.2 Internal energy and energy transfers Questions

  1. GCSE
  2. /Physics
  3. /3.2 Internal energy and energy transfers

40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank