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→Key Stage 3
==Key Stage 3==
===Meaning===
[[File:OxygenSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Oxygen]].]]
[[Oxygen]] is a [[non-metal]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 8.
: [[Oxygen]] has the [[Chemical Symbol|chemical symbol]] [[Oxygen|O]].
====Molecular Structure====
: [[Oxygen]] has the The [[Chemical Formula|chemical formula]] for a [[Oxygen]] [[molecule]] is [[Oxygen|O<sub>2</sub>]].
====Atomic Structure====
: [[Oxygen]] has 8 [[proton]]s and 8 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number|atomic number]] of 8 and a [[Relative Atomic Mass|atomic mass]] of 16.