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The particle model
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What the particle model says

What the particle model says

Particle model of solids, liquids, and gases with labelled state changes The particle model treats matter as tiny particles. Chemists use it because atoms, molecules, and ions are far too small to see directly.

The particle model Lesson

  1. GCSE
  2. /Chemistry
  3. /The particle model

Step-by-step lessons on OCR GCSE Chemistry The particle model. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons