Specification Point 4.7:
Know that crude oil is a mixture of Hydrocarbons

Crude Oil

Crude oil: A mixture of hydrocarbons.

  • Thick, sticky, black liquid that is found under porous rock (under the ground and under the sea).
Crude oil under the sea, CIE IGCSE Chemistry

Crude oil under the sea

If any fraction from crude oil is burned, then carbon dioxide and water is produced – this shows that crude oil is a complex mixture of hydrocarbons:

Crude oil burned, Edexcel IGCSE Chemistry

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Author: Jamie

Jamie got a First class degree in Chemistry from Oxford University before going on to teach chemistry full time as a professional tutor. He’s put together these handy revision notes to match the Edexcel IGCSE Chemistry specification so you can learn exactly what you need to know for your exams.