Amphoteric and amphiprotic compounds

[Deborah Cheng 1F]

What is the difference between amphoteric and amphiprotic compounds?

[miznaakbar]

Amphoteric substances can act as either an acid or a base whereas an amphiprotic substance can donate and accept hydrogen ions. Some but not all amphoteric substances are amphiprotic, for example page 429 of the textbook explains this well:
"Distinguish between amphoteric and amphiprotic. Aluminum metal is amphoteric (it reacts with both acids and bases), but it has no hydrogen atoms to donate as protons, and its not amphiprotic"

[Christy Zhao 1H]

An amphiprotic example would be water since there are hydrogen atoms and is able to donate a proton, and the oxygen has lone pairs and is able to accept a proton.

[Ramya Natarajan 1D]

To make sure you don't get them confused, I'd just look at the suffixes of each. In Amphiprotic molecules, the protons are able to be transferred and taken away to both a conjugate acid and base. An amphoteric molecule is simply able to react with both an acid and a base, but isn't necessarily one under the Bronsted definition.

[Elizabeth Bamishaye 2I]

Amphoteric compounds have both basic and acidic character, and the prime example of this is water.
Amphiprotic is a molecule that can act as a proton donor or proton acceptor.