7.1.10

Cracking

Test yourself

Cracking

Cracking is the process that breaks down long-chain hydrocarbons into shorter-chain molecules that are more useful. Cracking is an example of a thermal decomposition reaction. Cracking can be done in two ways:

Illustrative background for Catalytic crackingIllustrative background for Catalytic cracking ?? "content

Catalytic cracking

  • Vapourised heavy hydrocarbons are passed over the top of a heated catalyst.
  • Alkanes and alkenes are produced by this reaction.
    • E.g. hexane → butane + ethene
Illustrative background for Steam crackingIllustrative background for Steam cracking ?? "content

Steam cracking

  • Vapourised heavy hydrocarbons are combined with steam in a high temperature environment.
  • Alkanes and alkenes are produced by this reaction.
    • E.g. decane → octane + ethene

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium