Learning objective

Explain evaporation as particles escaping from the surface of a liquid.

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At a glance

5

Flashcards

7

Questions

Topic

Changes of state and the particle model

Subtopic

Changes of state

AQA GCSE PhysicsParticle model of matter

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Short explanation

Explain evaporation as particles escaping from the surface of a liquid. Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. 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 liquid, evaporation, 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 21 is specific to explain evaporation as particles escaping from the surface of a liquid and does not reuse a generic explanation from a neighbouring objective.

Key concepts

evaporationliquid

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
  • Evaporation Misunderstanding: Emphasize that evaporation occurs when particles at the surface gain enough energy to escape into the air, regardless of the temperature of the liquid.

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Related learning objectives

Explain evaporation as particles escaping from the surface of a | AQA Physics | ExamCompanion