Hydrocarbons are organic compounds composed of hydrogen and carbon atoms. The crossword solutions for the term hydrocarbon include ethane (6 letters), octane (6 letters), pentane (7 letters), tolan (5 letters), cetane (6 letters), hexane (6 letters), hexyne (6 letters), indane (6 letters), and octene (6 letters). Ethane is a saturated hydrocarbon with two carbon atoms, octane is an alkane with eight carbon atoms, pentane is an alkane with five carbon atoms, tolan is an aromatic hydrocarbon with five carbon atoms, cetane is an alkane with six carbon atoms, hexane is an alkane with six carbon atoms, hexyne is an alkyne with six carbon atoms, indane is an aromatic hydrocarbon with six carbon atoms, and octene is an alkene with eight carbon atoms.