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hydronium ion
H₃O⁺
acid
A substance that increases H⁺ concentration.
base
A substance that decreases H⁺ concentration.
pH
A 0-14 scale measuring how acidic or basic a solution is.
buffer
keeps pH stable
ocean acidification
CO₂ dissolves in seawater → forms carbonic acid → lowers ocean pH.
low ph
acidic
high ph
basic