Chemistry (5070) Topic 9 · Metals 9.5 Corrosion of metals Practise rusting conditions, hydrated iron(III) oxide, barrier methods, sacrificial protection, and galvanising as both barrier and sacrificial protection. Key TheoryLearn FirstLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading… Practice 1EasyLoading… Practice 2EasyLoading… Practice 3MediumLoading… Practice 4MediumLoading… Practice 5AdvancedLoading…