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C1 Part 2 C1 Lesson 27 Summary of C1.1, C1.2, C1.3 and C1.4 C1 Lesson 29 Alkenes
Year 9

Learning outcomes and Specification referenceEdit

C1.5.1 Obtaining useful substances from crude oil C1 Lesson 28 Cracking Hydrocarbons
a Hydrocarbons can be broken down (cracked) to produce smaller, more useful molecules. This process involves heating the hydrocarbons to vaporise them. Recall that heating large alkanes with a catalyst or steam and hot temperature decomposes to make the hydrocarbon smaller molecules.
The vapours are either passed over a hot catalyst or mixed with steam and heated to a very high temperature so that thermal decomposition reactions then occur.
b The products of cracking include alkanes and unsaturated hydrocarbons called alkenes. Know that some of these smaller molecules are called alkenes.

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References to lessons and resources in commercial schemesEdit

Nelson ThornesEdit

OUPEdit

Harper CollinsEdit

Longman/PearsonEdit

HodderEdit

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