Year 9 · Science
Diffusion: particle model in Year 9 Science
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Focus on diffusion and osmosis explained. Open support for “Revise How Diffusion Works”, then explain the idea in your own words.
Year 9 learners practise diffusion and osmosis explained.
The activities include Revise How Diffusion Works, Understand How Diffusion Works in Plants, Understand How Diffusion Works in the Body, and related practice. The checked support below includes video, worksheet, teaching. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.
Activities covered
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- Revise How Diffusion Works — support from Oak National Academy
- Understand How Diffusion Works in Plants — support from Oak National Academy
- Understand How Diffusion Works in the Body — support from Oak National Academy
- Understand How High and Low Concentrations Relate to Diffusion — support from Oak National Academy
- Understand How Temperature Affects Diffusion — support from YouTube — Cognito
- Understand Osmosis as a Special Type of Diffusion — support from YouTube — The Bio Coach
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Watch — a video explanation
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Practise — questions or activities to try
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Watch it explained
watch a video explanation
Diffusion: moving particles
Best for: a clear explanation before you practise
Diffusion through the cell membrane
Best for: a clear explanation before you practise
What is Diffusion? How Does it Work? What Factors Affect it? (2026/27 exams)
Best for: a clear explanation before you practise
Diffusion & Osmosis [KS3] - The Bio Coach
Best for: a clear explanation before you practise
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Learn it properly
lessons and teaching pages
Diffusion: lesson sequence
Best for: worked examples and step-by-step teaching
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Practise it
questions and activities to try
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Print and finish
worksheets away from the screen
The particle model of matter - KS3 Chemistry
Best for: pencil-and-paper practice away from the screen
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