Alkanes
None
Alkenes
Double bond between to carbons, C=C
Alkynes
Triple bond between 2 carbons
Alkanols
Hydroxyl group, OH
Alkanals
Carbonyl group, COH (C=OH)
Alkanones
Carbonyl group C=O
Alkanoic acids
Carboxyl group, COOH (C=OOH)
Esters
COO (C=OO)
Aromatics
Bezene
Amines
The amine group NH2
Amino acoids
The amine group NH2 and carboxyl group COOH
Halo-organics
Contain halogen