Final answer:
The chemical structure that represents an amine is CH3CH2NH2, which is known as ethylamine. Amines are derived from ammonia with alkyl or aryl groups replacing hydrogen atoms, and their names incorporate the alkyl group names followed by the suffix '-amine'.
Step-by-step explanation:
Out of the given chemical structures, the one representing an amine is CH3CH2NH2. Amines are organic compounds derived from ammonia (NH3) where one or more hydrogen atoms are replaced by alkyl or aryl groups. This particular amine is known as ethylamine and is a primary amine since there is only one alkyl group attached to the nitrogen atom, with the remaining two bonds on nitrogen being to hydrogen atoms.
The process of naming an amine involves identifying the alkyl groups attached to the nitrogen atom and using the prefix 'di-' or 'tri-' if there are multiple identical groups, followed by the suffix '-amine'. This nomenclature is based on the rules that are slightly modified from those used for alcohols, where the suffixed 'e' of the parent hydrocarbon is replaced by 'amine' (e.g., methanamine for CH3NH2).