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Presentation transcript:

© Oxford University Press 2011 IC Images Images

© Oxford University Press 2011 IC Images What do the things in the pictures have in common?

© Oxford University Press 2011 IC Images Petrol, polythene bottles, and propanone for nail varnish remover are all made from chemicals obtained from crude oil.

© Oxford University Press 2011 IC Images These charts compare the supply and demand for crude oil fractions

© Oxford University Press 2011 IC Images A catalytic cracking tower at an oil refinery

© Oxford University Press 2011 IC Images In cracking, each octane molecule breaks down to make two smaller molecules, such as hexane (C 6 H 14 ) and ethene (C 2 H 4 )

© Oxford University Press 2011 IC Images The displayed formula of ethene shows how its atoms are joined together.

© Oxford University Press 2011 IC Images You can detect compounds with double bonds by testing with a solution of bromine, or bromine water

© Oxford University Press 2011 IC Images Orange bromine water becomes colourless when it reacts with ethene and other unsaturated compounds

© Oxford University Press 2011 IC Images The displayed formula of propene, C 3 H 6