C1 chemistry 0.0 / 5 ? ChemistryPaints and oilsGCSEOCR Created by: francescaaustin2Created on: 08-01-15 20:14 what are fossil fuels? Finite resources as they are no longer being made or being made very slowly 1 of 17 why are fossil fuels a non-renewable source? as they are being used faster than they are being formed - 2 of 17 what are the specific difficulties associated with crude oil? -readily extractable resources will be used up in future and finding replacements 3 of 17 what is hydrocarbons made up of? lots of different of different molecules containing carbon and hydrogen only 4 of 17 what is crude oil a mixture of? many types of oils 5 of 17 where is crude oil heated on a fractionating column? on the bottom 6 of 17 what is bitumen? oil that doesn't boil, sinks that sinks to the bottom 7 of 17 it has a very ................ high boiling point 8 of 17 From bottom to top, what is the order of the fractionating column? Bitumen, fuel oils, heating oils, diesel, paraffin, petrol and LPG 9 of 17 the column is ...... at the top and ...... at the bottom cooler, hotter 10 of 17 why can crude oil be separated? hydrocarbons in different fractions have different sized molecules 11 of 17 what is breaking during boiling? intermolecular forces 12 of 17 a lot of ...... is needed to break the molecules of bitumen and heavy oils energy 13 of 17 why are the molecules easily separated in a substance like petrol? as they have weak attractive forces 14 of 17 why can transporting oils cause problems? it can damage bird feathers and cause their deaths. also clean up operations can damage wildlife. 15 of 17 what is cracking? a process that turns alkane molecules into smaller alkane and alkene molecules. 16 of 17 what does an alkene molecule have? a double bond 17 of 17
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