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AQA GCSE 9-1 Chemistry Crude oil and fuels topic summary
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A summary of the AQA GCSE chemistry specification for the crude oil and fuels topic.
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CRUDE OIL: A mixture of many Crude oil is separated into Lighter In complete cdifferent compounds. They are fractions using fractional fractions make you can test t
all hydrocarbons. distillation (done by using a better fuels as formed.
fractionating column). they ignite Carbon dioxid
HYDROCARBONS: Compounds The properties of the fractions easier and burn limewater clo
containing only hydrogen and depend on the size of the well with water turns b
carbon atoms. hydrocarbon molecules in it. cleaner flames. chloride pape
ALKANES: Saturated ALKENE: Unsaturated When hydrocarbon fuels are burnt in plenty of air, the Incomp
hydrocarbons containing as hydrocarbons containing carbon and hydrogen in the fuel are oxidised, producing combu
many hydrogen atoms as a double bond. React carbon dioxide and water. hydroc
possible in their molecules. with bromine water produc
turning it colourless. Crude oil and monox
Formula of an alkane: Formula of an alkene: fuel harmfu
CnH(2n+2) CnH2n Large hy
molecule
broken u
chains by
Cracking
saturate
hydrocar
fuel) and
hydrocar
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