Changes

: '''Chloride''' [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]].

====Properties====

: [[Chlorine]] is a more [[Reactivity|reactive]] [[Halogen]] than [[Bromine]] but less [[Reactivity|reactive]] than [[Fluorine]].

: [[Chlorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Chloride]] which [[dissolve]]s in [[water]] to produce [[Hydrochloric Acid]].

: [[Chlorine]] kills [[bacteria]].

: [[Chlorine]] is a pale green coloured [[gas]] at [[STP|room temperature]].

==Key Stage 4==