Sec 1 Classes of Compounds Classification based on functional group. ■Three broad classes ●Hydrocarbons Compounds containing oxygen Compounds containing nitrogen. ■Hydrocarbons Alkane:single bonds,sp3 carbons Cycloalkane:carbons form a ring Alkene:double bond,sp2 carbons Cycloalkene:double bond in ring Alkyne:triple bond,sp carbons .Aromatic:contains a benzene ringSec 1 Classes of Compounds Classification based on functional group. Three broad classes Hydrocarbons Compounds containing oxygen Compounds containing nitrogen. Hydrocarbons Alkane: single bonds, sp3 carbons Cycloalkane: carbons form a ring Alkene: double bond, sp2 carbons Cycloalkene: double bond in ring Alkyne: triple bond, sp carbons Aromatic: contains a benzene ring