Cracking 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEEdexcel Created by: Jazzy15Created on: 21-03-19 09:57 What is cracking ? A process carried out on fractions in oil refineries after fractional distallation 1 of 13 What does cracking involve ? Break down of larger alkanes into smaller, more useful alkanes and alkenes 2 of 13 How does cracking break down molecules ? By heating them 3 of 13 What does cracking produce ? Shorter chain alkanes 4 of 13 What are the shorter chain alkanes used for ? Fuels 5 of 13 What are alkenes used to make ? Polymers 6 of 13 What is paraffin ? An alkane 7 of 13 What does the liquid paraffin do ? It heats and evaporates 8 of 13 The porous pot catalyst is heated ? Strongly 9 of 13 What does the paraffin vapour pass over ? The hot porous pot 10 of 13 What happens when the paraffin vapour passes over the hot porous pot ? The hydrogen molecules break down 11 of 13 What is the product produced by the laboratory apparatus ? Ethene - a gas - which collects in the other tube 12 of 13 State a use for the hydrocarbon in your answer, other than a fuel This hydrocarbon can be used to make polymers 13 of 13
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