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[[Chlorine]] is a pale green [[gas]].
==Key Stage 3==
[[File:ChlorineSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Chlorine]].]]
[[File:Cl-35_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Chlorine]] [[atom]] with 17 [[proton]]s and 18 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 17 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Chlorine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 17.
===About Chlorine===
==Key Stage 4==
[[File:ClKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Chlorine]].]]
[[File:Cl-35_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Chlorine]]-35 [[isotope]] with 17 [[proton]]s and 18 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]], 8 in the second and 7 in the [[Outer Shell|outer shell]].]]
===Meaning===
[[Chlorine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with 17 [[proton]]s in the [[Atomic Nucleus|nucleus]].
|}
: An [[atom]] of [[Chlorine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
: '''Chloride''' [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative ChargedCharge|negatively charged]].
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#Place a piece of [[Litmus Paper|litmus paper]] over the mouth of the [[Test Tube|test tube]].
#If the [[Litmus Paper|litmus paper]] is [[bleach]]ed white then the [[gas]] is [[Chlorine]] or [[Fluorine]].
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Chlorine, identification of, page 207, GCSE Chemistry, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Chlorine, page 61, GCSE Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Chlorine, page 61, GCSE Combined Science Trilogy; Chemistry, CGP, 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 ''Chlorine, pages 102, 109, 185, GCSE Chemistry; Third Edition, Oxford University Press, 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 ''Chlorine, pages 15, 44-5, 64-5, 96, 165, 326, GCSE Chemistry; Student Book, Collins, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09767 ''Chlorine, pages 153, 163, GCSE Combined Science; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d80 ''Chlorine, pages 88, 102, GCSE Chemistry; The Revision Guide, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Chlorine, test for, pages 160, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Chlorine; test for, page 203, GCSE Combined Science Trilogy; Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Chlorine; test for, page 257, GCSE Chemistry, CGP, 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 ''Chlorine; test, page 273, GCSE Chemistry; Student Book, Collins, AQA '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Chlorine, pages 40, 57, 86, 146, Gateway GCSE Chemistry, Oxford, OCR '']