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Calcium

2,452 bytes added, 14:42, 31 March 2019
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==Key Stage 2=====Meaning===[[Calcium]] is a [[metal]] found in our [[bone]]s.==Key Stage 3=====Meaning===[[File:CalciumSymbol.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Calcium]].]][[Calcium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 20.===About Calcium===: [[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 [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]].: [[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]] is a [[solid]] (at [[Room TemperatureSTP|room temperature]]) .: An [[atom]] of [[Calcium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].: [[Calcium]] [[ion]]s have lost 2 [[electron]]s to become [[Positive Charged|positively charged]].==Key Stage 4=====Meaning===[[metalCalcium]] is a [[Group 2]] [[element]] , on the [[Periodic Table]], with 20 [[proton]]s in the [[Atomic Nucleus|nucleus]].===About Calcium===: [[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 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]] 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.: [[Lithium]] 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]].