Edexcel International GCSE Physics

Edexcel International GCSE Physics Change of State Exam Questions

Free Edexcel International GCSE Physics exam questions on Change of State, with mark schemes. Covers melting, boiling, specific heat capacity and latent heat.

Change of State exam questions

These packs of real past exam questions cover the whole of Section 5: Solids, Liquids and Gases, including Change of State. Work through every question on this sub-topic, then mark your answers against the mark scheme.

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About Edexcel International GCSE Physics Change of State

This sub-topic covers changes of state.

What you need to know

  • Particles Changes in arrangement and energy.
  • Specific heat capacity ΔQ = mcΔT.
  • Heating curves Flat sections during state changes.

Common mistakes in Change of State

  • Saying temperature rises while melting.
  • Forgetting mass units.

Try two Change of State exam-style questions

1. Find energy to heat 2 kg water by 10 °C (c = 4200). (1 mark)

Show the mark scheme answer

84 000 J.

2. Explain the flat part of a heating curve. (1 mark)

Show the mark scheme answer

Energy breaks bonds instead of raising temperature.

Change of State FAQs

What does this cover?

State changes and specific heat capacity.

Which practical links here?

Measuring specific heat capacity.