19,879
edits
Changes
no edit summary
==Key Stage 3==
[[File:ElementTile.png|right|400px|thumb|[[Element]]s are show on the [[Periodic Table]] with the [[Chemical Symbol]], [[Atomic Number]] and [[Relative Atomic Mass]].]]
===Meaning===
An '''element''' is a [[material]] made of only one type of [[atom]].
==Key Stage 4==
[[File:ElementTile.png|right|400px|thumb|[[Element]]s are show on the [[Periodic Table]] with the [[Chemical Symbol]], [[Atomic Number]] and [[Relative Atomic Mass]].]]
===Meaning===
An [[element]] is a [[material]] made of [[atom]]s that all have the same [[Atomic Number|atomic number]].
: [[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]].
{| class="wikitable"
|-
|[[File:GoldPicture.png|center|200px]]
|[[File:SulphurPicture.png|center|200px]]
|[[File:BoronPicture.png|center|200px]]
|[[File:DiamondPicture.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |[[Gold]] is an [[element]] made of [[Gold]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |These lumps of [[Sulphur]] are made of only [[Sulphur]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |This piece of [[Boron]] is made of only [[Boron]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |A diamond is made of only [[Carbon]] [[atom]]s making it [[pure]] [[carbon]].
|}
: [[Element]]s can be represented in a [[particle]] [[diagram]] by showing only one colour or shade to represent that [[atom]]s.
{| class="wikitable"
|-
|[[File:SolidElement.png|center|200px]]
|[[File:LiquidElement.png|center|200px]]
|[[File:GasElement1.png|center|200px]]
|[[File:GasElement2.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |This is a [[solid]] [[element]]. An example would be [[gold]].
| style="height:20px; width:200px; text-align:center;" |This is a [[liquid]] [[element]]. An example would be [[Mercury (Element)|Mercury]].
| style="height:20px; width:200px; text-align:center;" |This is a [[gas|gaseous]] [[element]]. An example would be [[helium]].
| 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]].
|}