Functional Group Atom or group of atoms that gives a molecule “personality.” (Molecules with that group behave alike.)
Halocarbon R-X X = F, Cl, Br, I
Alcohol R-OH
Ether R-O-R’ R, R’ = hydrocarbons
Aldehyde R-CHO
Ketone O = R-C-R’
Carboxylic Acid R-COOH
Ester O = RCOR’
Amine R-NH2
Amide O = RCNH2
Amino Acid NH2 O = RCHCOH
Alcohol C4H9OH
Organic Acid CH3COOH
Ether C2H5OC2H5
Amine CH3NH2
Ester CH3COOC2H5
Halocarbon C2H5Br
Alcohol C2H5OH
Aldehyde CH3CH2CHO
Amide C4H9CONH2
Ether C2H5OCH3
Ester CH3COOC3H7
Amino Acid CH2(NH2)COOH
Ketone C2H5COCH3
Organic Acid C2H5COOH
Amine C2H5NH2
Halocarbon CCl4
Aldehyde HCOH
Ketone CH3COCH3
Amide C2H5CONH2