Is hydroxide a liquid

Answer 1

The term hydroxide is generally used to refer to an ion and not a "substance" per se. In that light, hydroxide cannot be a solid, liquid or gas as we think of atoms or molecules. The hydroxide ion is a bonded pair of atoms, one of oxygen and one of hydrogen. It has the chemical symbol OH- because this ion "came from somewhere" with a "partner" ion that a "+" charge on it. The ions, because they are in a situation where they've become separated from each other, are not generally considered using the term "liquid" when we look at them (even though they may be in liquid solution).

Answer 2

Hydroxide, in chemical terms, refers to the anion OH-. By itself, hydroxide is not a liquid; rather, it is a negatively charged ion commonly found in compounds such as sodium hydroxide (NaOH) or calcium hydroxide (Ca(OH)2) where it may be in solid or liquid form depending on the compound.