AQA · Chemistry · 8462
GCSE Chemistry: Crude oil, hydrocarbons and alkanes
Organic chemistry · AQA GCSE Chemistry (8462), specification point 4.7.1.1. Cards are generated from the exam board's own specification for "Crude oil, hydrocarbons and alkanes", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Crude oil is a ? resource found in rocks.
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finite
What ancient biomass was crude oil formed from?
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Mainly plankton, which was buried in mud.
Crude oil is a ? of a very large number of compounds.
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mixture
Define a hydrocarbon.
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A molecule made up of hydrogen and carbon atoms only.
Which homologous series makes up most of the hydrocarbons in crude oil?
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The alkanes.
What is the general formula for the alkanes?
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CnH2n+2
What is the molecular formula of an alkane with 10 carbon atoms?
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C10H22 (using the general formula CnH2n+2: 2×10 + 2 = 22 hydrogens).
What is the name of the simplest alkane, with one carbon atom?
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Methane (CH4).
What is the molecular formula of ethane?
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C2H6
What is the name of the alkane with three carbon atoms?
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Propane (C3H8).
What is the molecular formula of butane?
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C4H10
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