A) It has no stereocenters.
B) It has a linear structure.
C) It cannot be superimposed on its mirror image.
D) It has no optical rotation.

A) An atom that is bonded to four different groups.
B) An atom that is bonded to four identical groups.
C) An atom that is bonded to three different groups.
D) An atom that is bonded to two groups.

A) 4
B) 1
C) 2
D) 3

A) A mixture of structurally different molecules.
B) A mixture of meso compounds.
C) A mixture of diastereomers.
D) A 50:50 mixture of two enantiomers.

A) They have the same properties in the body.
B) They can have different biological effects.
C) They are easier to synthesize.
D) They have no medicinal value.

A) By checking the molecular weight of a compound.
B) By measuring optical activity with a polarimeter.
C) By analyzing the color of the substance.
D) By counting the number of carbons in a molecule.

A) Infrared light.
B) Plane-polarized light.
C) Visible light.
D) Ultraviolet light.

A) A compound that absorbs light.
B) A compound that rotates the plane of polarized light.
C) A compound with high molecular weight.
D) A compound with no stereocenters.

A) Diastereomers have identical boiling points.
B) Enantiomers have identical physical properties except for optical activity.
C) Chiral molecules are always more soluble than achiral molecules.
D) Racemic mixtures have higher melting points than pure enantiomers.