Unit 1 — States of Matter
Diffusion — O Level Chemistry Chemistry
How particles spread through gases and liquids from areas of higher to lower concentration.
Topic Overview
How particles spread through gases and liquids from areas of higher to lower concentration. This sits within O Level Chemistry (Cambridge), alongside the other topics on that syllabus.
Topical Past Papers
Real exam questions on Diffusion, compiled by topic rather than by year, testing understanding rather than recall alone. Newer files include their own answers.
MCQs
Quick-check multiple-choice questions on Diffusion, for testing recall and spotting gaps fast.
MCQs coming soon
O Level Chemistry Notes
Presentation notes for Diffusion, for online study — view only.
Notes coming soon