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: [[Calcium]] is a more [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]] than [[Magnesium]] but less [[Reactivity|reactive]] than [[Strontium]].
: [[Calcium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Calcium]] [[Chemical Reaction|reacts]] strongly with [[steamwater]] to produce [[Hydrogen]] [[gas]] and [[Calcium Hydroxide]] and strongly with [[acid]] to produce [[Calcium]] [[salt]]s.
: [[Calcium]] is a [[solid]] at [[STP|room temperature]].
: An [[atom]] of [[Calcium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].
: [[Calcium]] is a more [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]] than [[Magnesium]] but less [[Reactivity|reactive]] than [[Strontium]].
: [[Calcium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Calcium]] [[Chemical Reaction|reacts]] strongly with [[steamwater]] to produce [[Hydrogen]] [[gas]] and [[Calcium Hydroxide]] and strongly with [[acid]] to produce [[Calcium]] [[salt]]s.
: [[Calcium]] is a [[solid]] at [[STP|standard temperature and pressure]].
: An [[atom]] of [[Calcium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].
: [[Calcium]] [[ion]]s have lost two [[electron]]s to become [[Positive Charged|positively charged]].