02. Cracking

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5 Terms

1
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What is cracking?

Processing fractions with large less useful molecules to produce smaller useful molecules

2
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What does cracking produce?

Unsaturated alkene molecules e.g. ethene and propene which can manufacture polymers

3
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What does the cracking process involve?

Passing hydrocarbon vapour over an aluminium oxide catalyst at 500c

4
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What is cracking (simply)?

Breaking down a substance using heat

5
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What does cracking of alkanes always produce? Why?

Always produces at least 1 alkene because carbon needs 4 bonds but won’t have enough hydrogen atoms