Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.

Explanation

Amino acids have acidic `COOH` group as well as `NH_(2)` group hence, `COOH` looses its H to `NH_(2)`, hence they exist as Zwitter ion.
`underset("Zwitter ion")underset(o+)(R-underset(NH_(3))underset(|)(CH)-)COO^(-)`