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Prefix System for Naming
Compounds
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To use the above table, the compound must be a hydrocarbon, that is, made up of carbon and hydrogen atoms. First, you must count the number of carbon atoms. Next, you must match the prefix with the number of carbon atoms. Then, add the suffix –ane onto the prefix. If the atoms are linked in a ring, then you add another prefix, cyclo-. Examples: 1. C6H12 = ____________
2. C2H6 = ___________ Give the number of carbon atoms 4. decane = ______________
5. octane = _______________
6. propane = ______________
Solutions: 1.) hexane, 2.) ethane, 3.) ten carbon 4.) eight carbon 5.) three carbon
For compounds which are not hydrocarbons, an outdated naming system used prefixes. Although this system is outdated, you will still encounter it from time-to-time.
Again, you must first take the chemical equation and see if it is binary or not. By adding the appropriate prefix above, you create the correct compound name. This will work in all instances. For naming compounds with roman numerals, check out the link which is below on help for naming compounds.
Examples: 1. CO2 = ______________ 2. CO = _______________ 3. K2S = _______________ 4. SiS2= _______________
solutions: 1.) carbon dioxide 2.) carbon monoxide 3.) dipotassium sulfide 4.) silicon disulfide
Please forward all questions, comments and criticisms to Gregory L. Curran. |
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