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Unit 6 — Chemical Reactions

Physical and Chemical Changes — O Level Chemistry Chemistry

Distinguishing physical changes from chemical changes, and the evidence that a chemical reaction has taken place.

Topic Overview

Distinguishing physical changes from chemical changes, and the evidence that a chemical reaction has taken place. This sits within O Level Chemistry (Cambridge), alongside the other topics on that syllabus.

Topical Past Papers

Real exam questions on Physical and Chemical Changes, 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 Physical and Chemical Changes, for testing recall and spotting gaps fast.

O Level Chemistry Notes

Presentation notes for Physical and Chemical Changes, for online study — view only.

Notes coming soon