4 Chemical changes
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Reactivity of metals
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Metal oxides
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The reactivity series
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Extraction of metals and reduction
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Reactions of acids
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Reactions of acids with metals
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Neutralisations of acids and salt production
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Soluble salts
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The pH scale and neutralisation
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Titrations
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Strong and weak acids
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Electrolysis
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The process of electrolysis
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Electrolysis of molten ionic compounds
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Using electrolysis to extract metals
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Electrolysis of aqueous solutions
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Representation of reactions at electrodes as half equations
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