Difference between revisions of "Calcium"
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[[Calcium]] is a [[metal]] found in our [[bone]]s. | [[Calcium]] is a [[metal]] found in our [[bone]]s. | ||
==Key Stage 3== | ==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=== | ===Meaning=== | ||
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[[Calcium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 20. | [[Calcium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 20. | ||
===About Calcium=== | ===About Calcium=== | ||
Revision as of 14:16, 12 March 2020
Contents
Key Stage 2
Meaning
Calcium is a metal found in our bones.
Key Stage 3
Meaning
Calcium is a Group 2 element, on the Periodic Table, with an atomic number of 20.
About Calcium
Molecular Structure
- Calcium has the chemical Symbol Ca.
- Calcium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Calcium as 20 protons and 20 neutrons in its nucleus giving it an Atomic Number of 20 and an atomic mass of 40.
- An atom of Calcium has only 2 electrons in its outer shell.
Properties
- Calcium is a more reactive alkali earth metal than Magnesium but less reactive than Strontium.
- Calcium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Calcium reacts strongly with water to produce Hydrogen gas and Calcium Hydroxide and strongly with acid to produce Calcium salts.
- Calcium is a solid at room temperature.
Key Stage 4
Meaning
Calcium is a Group 2 element, on the Periodic Table, with 20 protons in the nucleus.
About Calcium
Molecular Structure
- Calcium has the chemical symbol Ca.
- Calcium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Calcium has 20 neutrons in its nucleus giving it an atomic mass of 40.
- An atom of Calcium has only 2 electrons in its outer shell.
- Calcium ions have lost two electrons to become positively charged.
Properties
- Calcium is a more reactive alkali earth metal than Magnesium but less reactive than Strontium.
- Calcium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Calcium reacts strongly with water to produce Hydrogen gas and Calcium Hydroxide and strongly with acid to produce Calcium salts.
- Calcium is a solid at standard temperature and pressure.