Category Archives: 1.4 Crude oil and fuels

Fractional distillation of crude oil (GCSE)

Crude oil contains a mixture of different hydrocarbon compounds that boil at different temperatures. The larger the hydrocarbon molecule (the longer its carbon-chain length), the higher its boiling point. Liquids boil (liquid→gas) at their boiling point and start to condense (gas→liquid) back to liquid just below this temperature. Cooling encourages condensation. What is the difference between distillation and fractional distillation? For

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Hydrocarbon fuels

Before embarking on this topic, there is a great award winning video to mention, that is definitely worth watching: 300 years of fossil fuels in 300 seconds. [click here] What is a hydrocarbon fuel?  This is a fuel containing molecules of hydrocarbons. A hydrocarbon is a compound containing carbon and hydrogen atoms only.  In most cases, a hydrocarbon fuel refers to fossil

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Crude oil

What is crude oil? Crude oil is a mixture of hydrocarbon compounds. For a reminder of what is meant by the terms mixture and compound see previous topic here. A quick reminder also appears at the bottom of this page. What are hydrocarbon compounds? A compound that only contains carbon and hydrogen elements Hydrogen and carbon atoms that are chemically bonded together

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