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==Key Stage 4==
===Meaning===
A '''neutral''' [[substance]] is one which does not form any free [[Hydrogen Ion(Chemistry)|Hydrogen ions]] or [[Hydroxide Ion(Chemistry)|Hydroxide ions]] when in [[solution]] producing a [[solution]] of [[pH]] 7.
===About Neutral Substances===
: All [[substance]]s with a [[pH]] of '''7''' are '''neutral'''.
: [[Salt]]s are '''neutral''' [[substance]]s because they do not contain any [[Hydrogen Ion(Chemistry)|H<sup>+</sup>]] or [[Hydroxide Ion(Chemistry)|OH<sup>-</sup>]] parts to the [[compound]].