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==Key Stage 2=====Meaning===[[Oxygen]] is a [[gas]] in the [[air]]. ==Key Stage 3==[[File:OxygenSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Oxygen]].]][[File:O-16_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Oxygen]] [[atom]] with 8 [[proton]]s and 8 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 8 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]===Meaning===[[Oxygen]] is a [[Group 6]] [[non-metal]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 8. ===About Oxygen===: [[Oxygen]] makes up 21% of the [[air]].: [[Oxygen]] has the [[Chemical Symbol|chemical symbol]] [[Oxygen|O]].====Molecular Structure====: The [[Chemical Formula|chemical formula]] for a [[Oxygen]] [[molecule]] is [[Oxygen|O₂]].====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.: [[Oxygen]] is in [[Period]] 2 of the [[Periodic Table]] because it has 2 [[Electron Orbital|electron shells]].====Properties====: [[Oxygen]] is a [[gas]]eous (at [[Room TemperatureSTP|room temperature]]) . ==Key Stage 4==[[File:OKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Oxygen]].]][[File:O-16_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Oxygen]]-16 [[isotope]] with 8 [[proton]]s and 8 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]] and 6 in the [[Outer Shell|outer shell]].]]===Meaning===[[Oxygen]] is a [[Group 6]] [[non-metal]] [[element]] , on the [[Periodic Table]], with 8 [[proton]]s in the [[Atomic Nucleus|nucleus]]. ===About Oxygen===: [[Oxygen]] makes up 21% of the [[air]].: [[Oxygen]] has the [[Chemical Symbol|chemical symbol]] [[Oxygen|O]].====Molecular Structure====: The [[Chemical Formula|chemical formula]] for an [[Oxygen]] [[molecule]] is [[Oxygen|O₂]].: [[Oxygen]] forms a [[Covalent Bond|covalent bond]] with another [[Oxygen]] [[atom]] to produce a [[Simple Covalent Molecule|simple covalent molecule]].====Atomic Structure====: The most common [[Stable Isotope|stable isotope]] of [[Oxygen]] has 8 [[neutron]]s in its [[Atomic Nucleus|nucleus]]giving it an [[Relative Atomic Mass|atomic mass]] of 16.: [[Oxygen]] is in [[Period]] 2 of the [[Periodic Table]] because it has 2 [[Electron Orbital|electron shells]].: [[Oxygen]] has 6 [[electron]]s in its [[Outer Shell|outer shell]] and needs 2 more to get a full [[Outer Shell|outer shell]] so it can form 2 [[bond]]s with other [[atom]]s. ====Properties====: [[Oxygen]] is [[gas]] at [[STP|standard temperature and pressure]]. ====Testing for Oxygen====#Collect the [[gas]] in a [[Test Tube|test tube]].#Place a glowing [[Wooden Splint|splint]] over the mouth of the [[Test Tube|test tube]].#If the [[Wooden Splint|splint]] relights then the [[gas]] is [[Oxygen]]. ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Oxygen, page 287, GCSE Physics; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Oxygen, pages 107, 184-5, 213, 292-5, GCSE Chemistry; Student Book, Collins, AQA '']:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Oxygen, pages 184, 194-195, 197, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']:[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Oxygen, pages 52, 61, 124, 282, 288-289, GCSE Biology; Third Edition, Oxford University Press, AQA ''] ====OCR====:[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Oxygen, pages 42, 49, 191, 236, 259, Gateway GCSE Biology, Oxford, OCR '']