Organic Chemistry functional groups

Alcohol

-OH (hydroxy group)

Aldehyde

C=O (carbonyl group)

Alkane

single bond (not functional group)

Alkene

double bond

Alkyl halide

-X (halo group)

Alkyne

triple bond

Amide

-CONH2, -CONHR, -CONR2

Amine

-NH2 (amino group)

phenyl group

Carboxylic acid

-COOH (carboxyl group)

Ester

-COOR

Ether

-OR (alkoxy group)

Ketone

-C=O (carbonyl group)

phenol

Acetal

Nitrile