Difference between revisions of "Element"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | An '''element''' is | + | An '''element''' is a [[material]] made of only one type of [[atom]]. |
===About Elements=== | ===About Elements=== | ||
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| style="height:20px; width:200px; text-align:center;" |This [[gas|gaseous]] [[element]] is made of [[molecule]]s of the [[element]]. An example would be [[oxygen]]. | | style="height:20px; width:200px; text-align:center;" |This [[gas|gaseous]] [[element]] is made of [[molecule]]s of the [[element]]. An example would be [[oxygen]]. | ||
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| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | An [[element]] is a [[material]] made of [[atom]]s that all have the same [[Atomic Number|atomic number]]. | ||
| + | |||
| + | ===About Elements=== | ||
| + | : [[Atom]]s of the same [[element]] all have the same [[Chemical Property|chemical properties]]. | ||
| + | : There are several [[isotope]]s of each [[element]] which have slightly different [[Physical Property|physical properties]] such as [[density]] and [[Melting Point|melting point]]. | ||
Revision as of 20:26, 5 December 2018
Key Stage 3
Meaning
An element is a material made of only one type of atom.
About Elements
- There are over 100 different elements and they are all shown on the Periodic Table.
- An element can be as little as one atom or could be trillions of identical atoms.
- If there are any other types of atom in an object it is not an element.
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| Gold is an element made of Gold Atoms. | These lumps of Sulphur are made of only Sulphur atoms. | This piece of Boron is made of only Boron atoms. | A diamond is made of only Carbon atoms making it pure carbon. |
- Elements can be represented in a particle diagram by showing only one colour or shade to represent that atoms.
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| This is a solid element. An example would be gold. | This is a liquid element. An example would be mercury. | This is a gaseous element. An example would be helium. | This gaseous element is made of molecules of the element. An example would be oxygen. |
Key Stage 4
Meaning
An element is a material made of atoms that all have the same atomic number.
About Elements
- Atoms of the same element all have the same chemical properties.
- There are several isotopes of each element which have slightly different physical properties such as density and melting point.