Cambridge AS & A Level Chemistry
14.2Alkenes
Alkenes in Cambridge AS & A Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic45 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 14.2.1Recall how alkenes are produced: elimination from halogenoalkanes, dehydration of alcohols and cracking.
- 14.2.2Describe the addition of hydrogen, steam, hydrogen halides and halogens, oxidation by cold dilute and hot concentrated KMnO₄, and addition polymerisation.
- 14.2.3Describe the bromine-water test for C=C.
- 14.2.4Describe the electrophilic addition mechanism for bromine/ethene and hydrogen bromide/propene.
- 14.2.5Explain carbocation stability by inductive effects and use it to explain Markovnikov addition.
Lessons
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Alkenes: preparation and reactions
50 min
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The electrophilic addition mechanism
45 min
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Sample question
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Turn Alkenes into a strength.
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