Cambridge AS & A Level Chemistry
14.1Alkanes
Alkanes 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.
- 14.1.1Recall how alkanes are produced: hydrogenation of alkenes and cracking.
- 14.1.2Describe complete and incomplete combustion, and free-radical substitution of ethane by Cl₂ or Br₂ in ultraviolet light.
- 14.1.3Describe the free-radical substitution mechanism: initiation, propagation and termination.
- 14.1.4Suggest how cracking gives more useful alkanes and alkenes from heavy fractions.
- 14.1.5Explain the general unreactivity of alkanes by C–H bond strength and low polarity.
- 14.1.6Recognise the environmental effects of CO, oxides of nitrogen and unburnt hydrocarbons from engines and their catalytic removal.
Lessons
- Full access
Alkanes, crude oil and combustion
50 min
- Full access
Free-radical substitution of alkanes
40 min
Join to read every lesson, or see what Full access includes.
Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Alkanes into a strength.
Practise with instant marking, see your mastery grow and get a study plan built around your exam date.