Question

1. match the following structures with their name.

a. b.
h o h h
h-c-c h-c-c-c-h
h h h h
c. d.
h o h h
h-c-c h-c-n
h oh h h
aldehyde (carbonyl) choose
ketone choose
carboxyl choose
amine choose

Explanation:

1. aldehyde (carbonyl): Aldehydes have a -CHO functional group (carbonyl bonded to a hydrogen and an alkyl group), which matches structure A.
2. ketone: Ketones have a carbonyl group (C=O) bonded to two alkyl groups, which matches structure B.
3. carboxyl: Carboxyl groups have the formula -COOH, which matches structure C.
4. amine: Amines have a nitrogen atom bonded to alkyl/hydrogen groups, which matches structure D.

Answer:

aldehyde (carbonyl): A. $\ce{CH3CHO}$
ketone: B. $\ce{CH3COCH3}$
carboxyl: C. $\ce{CH3COOH}$
amine: D. $\ce{CH3NH2}$