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Learning objective

Explain diffusion using the principles of kinetic particle theory.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE ChemistryStates of matterCore content

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Quick explanation

Explain diffusion using the principles of kinetic particle theory

  • This point belongs to Diffusion, especially Diffusion outcomes.
  • You need to be able to explain diffusion using the principles of kinetic particle theory.
  • The key ideas to know are Describe and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplain

Why it matters

This objective helps connect Diffusion outcomes to exam-style questions, flashcards, and revision notes for Diffusion.

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Paper 3 structured question: Diffusion

Paper 3Theory (Core)1 marks

Description

Diffusion in Gases

When a gas is released in a room, it spreads out until it is evenly distributed.

  1. a

    State the process by which gas particles spread out in a room.

    Aim for approximately 1 distinct marking point.

    [1]
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