English National Curriculum - Science
Mission Objectives
Describe and explain the process of cracking, including the conditions used and its importance to the petrochemical industry
Write word and balanced symbol equations for cracking reactions and recognise the products formed
Identify and test for alkenes, explaining their reactions (e.g. with bromine water) and comparing them with alkanes
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Words and meanings to learn
cracking
a process used to break down long-chain hydrocarbons into shorter, more useful hydrocarbons
alkene
an unsaturated hydrocarbon containing at least one carbon–carbon double bond (C=C)
thermal decomposition
a chemical reaction in which a compound is broken down by heating
bromine water
an orange solution of bromine used to test for unsaturation
unsaturated
when a molecule contains at least one double or triple bond between carbon atoms
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Resources:
Demo of cracking:
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