Chemistry (5070) Topic 11 · Organic chemistry 11.5 Alkenes Practise carbon–carbon double bonding, unsaturation, cracking and its purpose, the bromine-water test, and addition reactions of alkenes with bromine, hydrogen and steam. Key TheoryLearn FirstLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading… Practice 1EasyLoading… Practice 2EasyLoading… Practice 3MediumLoading… Practice 4MediumLoading… Practice 5AdvancedLoading… Practice 6AdvancedLoading…