Definitions for AS OCR chemistry A

saturated and unsaturated hydrocarbons

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A compound of hydrogen and carbon only

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Saturated hydrocarbon

Single bonds only. For example, C3H8 (propane).

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Unsaturated hydrocarbon

Carbon-carbon multiple bonds. For example, C2H4 (ethene).

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Aliphatic hydrocarbon

Carbon atoms joined together in straight (unbranched or branched) chains.

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Alicyclic hydrocarbons

Carbon atoms are joined together in a ring structure.

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