GCSE Chemistry Topic 5: Energy Changes, Exothermic and Endothermic (One-Page Sheet)

Part of All of GCSE Chemistry on 11 Sheets, the free examiner-made series. Made by Fiaraz Iqbal, Former Headteacher & Examiner. Works for AQA, Edexcel and OCR.

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← Topic 4: Chemical ChangesTopic 6: Rates and Equilibrium →

Frequently asked questions

What is an exothermic reaction?

A reaction that transfers energy to the surroundings, so the temperature rises.

How do you calculate energy change from bond energies?

Energy needed to break bonds minus energy released making bonds.

The rest of the series

Annotated Periodic TableGroups, ions, reactivity, formulae and Mr in one annotated table.Topic 1: Atoms, Elements and MixturesAtomic structure, isotopes, electron shells and separation techniques.Topic 2: Bonding, Structure and PropertiesIonic, covalent and metallic bonding and how structure explains properties.Topic 3: Quantitative ChemistryMoles, Mr, yield, atom economy and concentration calculations.Topic 4: Chemical ChangesReactivity series, acids, salts, pH and electrolysis.Topic 6: Rates and EquilibriumCollision theory, catalysts, reversible reactions and equilibrium.Topic 7: Organic ChemistryCrude oil, alkanes, alkenes, alcohols, acids and polymers.Topic 8: Chemical AnalysisPurity, chromatography, gas tests and ion tests.Topic 9: Chemistry of the AtmosphereAtmosphere evolution, greenhouse effect and pollutants.Topic 10: Using ResourcesPotable water, LCA, recycling, alloys, Haber process and fertilisers.

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