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C1a. ­ Products from rocks
3. Crude oil

C1a 3.1 ­ Fuels from crude oil
Crude Oil is a mixture of many different compounds.
A mixture contains two or more elements or compounds
that are not chemically bonded together.
Crude oil straight out of the ground is not much use.…

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Changing the conditions in which we burn fuels may change
the products that are made. For example when a car engine
does not have enough oxygen to burn the fuel we get
incomplete combustion. Instead of all the carbon in the fuel
turning to carbon dioxide we get carbon monoxide…

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