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: [[Calcium]] has the [[Chemical Formula|chemical formula]] [[Calcium|Ca]].
: [[Calcium]] as 20 [[proton]]s and 20 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 20 and an [[Relative Atomic Mass|atomic mass]] of 40.
: [[Calcium]] is the least 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 [[steam]] to produce [[Hydrogen]] [[gas]] and [[Calcium Hydroxide]] and strongly with [[acid]] to produce [[Calcium]] [[salt]]s.
: [[Calcium]] has the [[Chemical Formula|chemical formula]] [[Calcium|Ca]].
: The most [[Stable Isotope|stable isotope]] of [[Calcium]] has 20 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 40.
: [[Calcium]] is a more [[Reactivity|reactive]] than [[CarbonAlkali Earth Metal|alkali earth metal]] on the than [[Reactivity Series|reactivity seriesMagnesium]] so it must be but less [[Extraction of MetalsReactivity|extractedreactive]] from its [[ore]] using than [[electrolysisStrontium]].
: [[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 [[steam]] to produce [[Hydrogen]] [[gas]] and [[Calcium Hydroxide]] and strongly with [[acid]] to produce [[Calcium]] [[salt]]s.