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3.1.2 Changes of state
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The three states of matter

The three states of matter

State-change map showing solid, liquid and gas, with arrows labelled melting, freezing, boiling, evaporating, condensing and sublimating

A change of state is a physical change in which a substance changes between the solid, liquid and gas states. The substance remains the same material because its particles have not changed into a different substance.

3.1.2 Changes of state Lesson

  1. GCSE
  2. /Physics
  3. /3.1.2 Changes of state

Step-by-step lessons on AQA GCSE Physics 3.1.2 Changes of state. Each one builds up to exam-style questions. Build a strong grip on equations, units and Key Stage 3 fundamentals before tackling the more demanding topics like electromagnetism, the particle model of matter and space physics.

Lessons