Functional Groups (NB CH2)

Question 1

R-CH3

Polar or nonpolar?

Answer 1

Methyl

Nonpolar

Question 2

R-OH

Polar or nonpolar?

Answer 2

Hydroxyl

Polar

Question 3

R-COOH

Polar or nonpolar?

Answer 3

Carboxyl

Polar

Can exist in protonated (R-COOH) and deprotonated (R-COO-) forms

Can form hydrogen bonds while protonated and ionic bonds when deprotonated

Question 4

R-NH3

Polar or nonpolar?

Answer 4

Amino

Polar

Question 5

R-PO4 2-

Polar or nonpolar?

Answer 5

Phosphate

Polar

Can form hydrogen and ionic bonds

Question 6

R-HS

Polar or nonpolar?

Answer 6

Thiol

Polar (less so than OH, though)