Products from oil 0.0 / 5 ? ChemistryProducts from oilGCSEAQA Created by: Sam EvansCreated on: 21-05-14 21:07 Give two reasons why fractions from crude oil are cracked To make fuels that are more useful and because large hydrocarbons do not burn easily 1 of 7 Describe two ways that are used to crack hydrocarbons By heating a mixture of hydrocarbon vapours and steam to a very high temperature and by passing hydrocarbon vapours over a hot catalyst 2 of 7 Sort these formulae into alkanes and alkenes: C3H6, C5H12, C4H8, C6H14 Alkanes: C5H12, C4H10, C6H14 Alkenes: C3H6, C4H8 3 of 7 Poly(ethene) is a polymer. Explain what is meant by a polymer A polymer has very large molecules made by many small monomers 4 of 7 Describe one use of a smart polymer Shape memory polymer used for stitching wounds 5 of 7 Some plastics are biodegradable. What does biodegradable mean? Can be broken down by microorganisms 6 of 7 Suggest three ways of reducing the problems of plastic rubbish Use biodegradable polymers, recycle and collect litter for proper disposal 7 of 7
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