What is Diffusion? How Does it Work? What Factors Affect it? (2026/27 exams)

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*** WHAT’S COVERED ***
1. The definition of diffusion.
2. Where diffusion occurs.
3. Diffusion as a passive process.
4. Factors affecting the rate of diffusion.

*** EXAM BOARD INFO ***
KS3:
All relevant to KS3 course

GCSE:
AQA – All on your course
IGCSE Edexcel – All on your course
Edexcel – All on your course
OCR 21st Century – All on your course
OCR Gateway – All on your course

*** CHAPTERS ***
0:00 Introduction
0:22 What is Diffusion?
1:43 Diffusion in Gases and Liquids
2:05 Diffusion Across Membranes
3:00 Diffusion is Passive
3:16 Factors Affecting Diffusion Rate: Concentration Gradient
4:05 Factors Affecting Diffusion Rate: Temperature
4:25 Factors Affecting Diffusion Rate: Surface Area

*** PLAYLISTS ***

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