Amphiprotic
Definition
An amphiprotic substance is one that can act as either an acid or base – it can either donate or accept protons depending on its environment.
Analogy
Consider yourself at different family gatherings. With your younger cousins, you might take on the role of leader (donating guidance like an acid donates protons). But with your elders, you might become the listener (accepting wisdom like a base accepts protons). You're amphiprotic - you can adapt to your environment just like an amphiprotic substance.
Related terms
Amphoteric: A substance that can act as both an acid and a base.
Hydroxide Ion: The ion that water becomes after losing a proton.
pH Scale: A measure of how acidic or basic a substance is.
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