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This is an old revision of this page, as edited by HelpJazz (talk | contribs) at 21:12, September 30, 2007. It may differ significantly from current revision.
A functional group is any one of a number of specific combinations of molecules within an atom. Used mainly in organic chemistry, functional groups are a helpful way to determine the structure and function of a molecule, as functional groups act very similar no matter what molecule they are a part of.
A generic functional group is represented by the letter R in a chemical formula. For instance, CR4 represents a carbon with four of the same functional group bonded to it.
Some functional groups are:
| Name | Description | Ending | Simple Example) |
|---|---|---|---|
| alkane | carbon-carbon single bond | -ane | Ethane (CH3CH3) |
| alkene | carbon-carbon double bond | -ene | Ethene (CH2CH2) |
| alkyne | carbon-carbon tripple bond | -yne | Ethyne (CHCH) |
| Arene | unsaturated six-carbon ring | none | Benzene (C6H6 |
| Halide | contains fluorine, chlorine, bromine or iodine | none | Chloroethane (ClCH2CH3 |
| test1 | test2 | test3 |