GCSE Chemistry

Chemical changes
revision.

Acids and alkalis, electrolysis, rates, catalysts and energy changes.

Chemical changes guides

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01

Acids and alkalis

pH, strong and weak acids, neutralisation equations, salt names, carbonates, metals and the titration practical.

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Electrolysis

Molten and aqueous electrolysis, cathode and anode, half equations, aluminium extraction and the brine cell.

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Rates of reaction

Collision theory, concentration, pressure, surface area, temperature, catalysts, rate graphs and reversible reactions.

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Energy changes

Exothermic and endothermic reactions, reaction profiles, activation energy, bond energies and simple cells.

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