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 ring 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 ring