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[[Calcium]] is a [[metal]] found in our [[bone]]s.
==Key Stage 3==
[[File:CalciumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Calcium]].]]
[[File:Calcium2dWK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Calcium]] [[atom]] with 20 [[proton]]s and 20 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 20 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Calcium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 20.
===About Calcium===