IUPAC Alkane, Alkene, Alkyne, Alcohol and Acid Names
Carbon Alkane; Alkene; Alkyne Alcohol Acid Carbon Alkane
1 Methane Methanol Methanoic 11 Undecane
2 Ethane; Ethene Ethanol Ethanoic 12 Dodecane
3 Propane; Propene; Propyne Propanol Propanoic 13 Tridecane
4 Butane; Butene; Butyne Butanol Butanoic 14 Tetradecane
5 Pentane; Pentene; Pentyne Pentanol Pentanoic 15 Pentadecane
6 Hexane; Hexene; Hexyne Hexanol Hexanoic 16 Hexadecane
7 Heptane; Heptene; Heptyne Heptanol Heptanoic 17 Heptadecane
8 Octane; Octene; Octyne Octanol Octanoic 18 Octadecane
9 Nonane; Nonene; Nonyne Nonanol Nonanoic 19 Nonadecane
10 Decane; Decene; Decyne Decanol Decanoic 20 Icosane
Alkane, alkene, alkyne, alcohol and acid names are given, up through molecules having 10 carbons.  For hydrocarbons containing 11-20 carbons, only the alkane names are shown, but naming follows the same rules as for hydrocarbons or functional group names for molecules having fewer numbers of carbons.