Hydroxide Ion: A negatively charged ion consisting of one oxygen atom bonded with one hydrogen atom (-OH). It gives sodium hydroxide its alkaline properties.
Strong Base:Substances like sodium hydroxide that completely dissociate into their constituent ions when dissolved in water, resulting in high concentrations of hydroxide ions.
Corrosive: Describes substances like sodium hydroxide that can cause severe damage, such as burns, due to their ability to chemically react with and destroy living tissues.