Every IGCSE Chemistry student hits the same wall near exam time: there is a lot to remember, and it is scattered across folders, textbooks and half-finished notes. Knowledge organisers fix that. Each one takes a single topic and lays out everything that matters — key vocabulary, the core ideas, the diagrams, the explanations and the common exam mistakes — on one side of A4.

This is a complete set for the Edexcel IGCSE Chemistry specification (4CH1): 28 topics, one page each, free to download below. They are built for active revision rather than just reading — every sheet ends with a cover-and-quiz section so students test themselves instead of skimming.

Use them however suits you — print a stack for the class, set one as homework, hand them out before a test, or send the link to students for independent revision. No sign-up and no catch: just click and download.

On every organiser: key vocabulary · core content and diagrams · the ‘why’ behind the chemistry · common exam mistakes · self-check questions.

Section 1 — Principles of Chemistry

• 1.1 Solids, Liquids & Gases
• 1.2 Elements, Compounds & Mixtures
• 1.3 Atomic Structure
• 1.4 The Periodic Table
• 1.5 Chemical Formulae, Equations & Calculations
• 1.6 Ionic Bonding
• 1.7 Covalent Bonding
• 1.8 Metallic Bonding
• 1.9 Electrolysis

Section 2 — Inorganic Chemistry

• 2.1 Group 1 — The Alkali Metals
• 2.2 Group 7 — The Halogens
• 2.3 Gases in the Atmosphere
• 2.4 The Reactivity Series
• 2.5 Extraction & Uses of Metals
• 2.6 Acids, Alkalis & Titrations
• 2.7 Acids, Bases & Salt Preparations
• 2.8 Chemical Tests

Section 3 — Physical Chemistry

• 3.1 Energetics
• 3.2 Rates of Reaction
• 3.3 Reversible Reactions & Equilibria

Section 4 — Organic Chemistry

• 4.1 Introduction to Organic Chemistry
• 4.2 Crude Oil
• 4.3 Alkanes
• 4.4 Alkenes
• 4.5 Alcohols
• 4.6 Carboxylic Acids
• 4.7 Esters
• 4.8 Synthetic Polymers

More free science resources

That is the full specification covered. If these are useful, take a look around the rest of practical-science.com — there are step-by-step laboratory practicals for IGCSE, GCSE and IB Science, all free to use in the classroom.

• Practical Science
• Study Skills