AQA GCSE Physics contents

Unit 3 · Particle Model of Matter

Changes of State, Internal Energy & Specific Heat Capacity

2 min read · part of the full Exam Guide

Changes of state

  • Melting, freezing, boiling, evaporating, condensing and sublimating (solid straight to gas) are changes of state
  • Mass is conserved when a substance changes state: the same particles are just arranged differently
  • Changes of state are physical changes, not chemical: the material recovers its original properties if the change is reversed

Full Exam Guide

The rest of this topic is in the full Exam Guide

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In the full topic

  • Changes of state
  • Internal energy
  • Temperature change and specific heat capacity
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