Difference between revisions of "Sodium"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
− | [[File: | + | [[File:SodiumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Sodium]].]] |
[[Sodium]] is a [[Group 1]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 11. | [[Sodium]] is a [[Group 1]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 11. | ||
===About Sodium=== | ===About Sodium=== |
Revision as of 21:17, 2 April 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Sodium is a Group 1 element, on the Periodic Table, with an atomic number of 11.
About Sodium
Molecular Structure
- Sodium has the chemical symbol Na.
- Sodium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Sodium has 11 protons and 12 neutrons in its nucleus giving it an Atomic Number of 11 and an atomic mass of 23.
- An atom of Sodium has only 1 electron in its outer shell.
Properties
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium oxidises quickly in the presence of Oxygen so it must be stored in oil.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at room temperature.
Key Stage 4
Meaning
Sodium is a Group 1 element, on the Periodic Table, with 11 protons in the nucleus.
About Sodium
Molecular Structure
- Sodium has the chemical symbol Na.
- Sodium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Sodium has 12 neutrons in its nucleus giving it an atomic mass of 23.
- An atom of Sodium has only 1 electron in its outer shell.
- Sodium ions have lost an electron to become positively charged.
A diagram showing the formation of a Sodium ion. |
Properties
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium oxidises quickly in the presence of Oxygen so it must be stored in oil.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at standard temperature and pressure with a melting point of 97.8 °C.