Question

question 1
a chemical that can release free hydroxide ions or accept free hydrogen ions in a solution is a(n) ____________.
answer
base
proton donor
salt
acid
i dont know yet

Explanation:

A base is defined as a substance that can release hydroxide ions ($OH^-$) in solution or accept hydrogen ions ($H^+$). A proton - donor is an acid according to the Brønsted - Lowry definition. A salt is a product of an acid - base reaction. An acid is a substance that donates hydrogen ions.

Answer:

base