Learning objective

Explain that the material recovers its original properties if a change of state is reversed.

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Flashcards

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Topic

Changes of state and the particle model

Subtopic

Changes of state

AQA GCSE PhysicsParticle model of matter

Study support

Understand this objective

Short explanation

Explain that the material recovers its original properties if a change of state is reversed. Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. In Changes of state, this means changes of state are explained by particle energy and arrangement. The answer should use the approved wording from Changes of state and the particle model, include that, material, recovers, original, and avoid drifting into another section of Particle model of matter. For revision, practise saying the exact objective aloud, then add the one calculation, particle movement, collision, graph, or practical detail that makes the statement true. A strong exam response for checkpoint 27 is specific to explain that the material recovers its original properties if a change of state is reversed and does not reuse a generic explanation from a neighbouring objective.

Key concepts

change of statereversible change

Why it matters

This objective helps connect Changes of state to exam-style questions, flashcards, and revision notes for Changes of state and the particle model.

Common mistakes

1 linked

Misunderstanding Reversibility: Emphasize that changes of state, such as melting and freezing, are physical changes, and materials return to their original state when the process is reversed.

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