Course content

57 lessons

7.1-7.3 · Acids, bases and salts

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4.1-4.2, 6.4 · Redox and electrolysis

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Oxidation number makes the change visible

The reactivity series, read as a voltage

How a simple cell drives a current

Why a galvanised roof survives a scratch

A hydrogen fuel cell powers a vehicle

Two ways for a current to pass

Which ion goes to which electrode

Half-equations at the two electrodes

Three aqueous electrolysis cases

Two volumes of hydrogen to one of oxygen

Electroplating a spoon with copper

One exam question, end to end

Quick revision: redox and electrolysis

5.1, 6.1-6.3 · Energy changes and rates of reaction

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8.1-8.5, 9.1-9.6 · The periodic table in use: groups, transition metals and metals

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4.1-4.2, 6.4 · Redox and electrolysisLesson 2 of 15Free preview

Oxidation is loss of electrons

Magnesium behaves the same way with oxygen and with chlorine. Say what it is doing.