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[[Potassium]] is a [[metal]].
==Key Stage 3==
[[File:PotassiumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Potassium]].]]
[[File:K-39_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Potassium]] [[atom]] with 19 [[proton]]s and 20 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 19 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
===About Potassium===
====Molecular Structure====: [[Potassium]] has the [[Chemical FormulaSymbol|chemical formulasymbol]] [[Potassium|K]].: [[Potassium]] [[atom]]s join together in large numbers to form a giant [[metal]] [[molecule]].====Atomic Structure====
: [[Potassium]] has 19 [[proton]]s and 20 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 19 and an [[Relative Atomic Mass|atomic mass]] of 39.
: An [[atom]] of [[Potassium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
====Properties====
: [[Potassium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Sodium]] but less [[Reactivity|reactive]] than [[Rubidium]].
: [[Potassium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Potassium]] [[Oxidation|oxidises]] quickly in the presence of [[Oxygen]] so it must be stored in [[oil]].
: [[Potassium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Potassium Hydroxide]].
: [[Potassium]] is a [[solid]] at [[STP|room temperature]].
==Key Stage 4==
[[File:KKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Potassium]].]]
[[File:K-39_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Potassium]]-39 [[isotope]] with 19 [[proton]]s and 20 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]], 8 in the second, 8 in the third and 1 in the [[Outer Shell|outer shell]].]]
===Meaning===
[[Potassium]] is a [[Group 1]] [[element]] , on the [[Periodic Table]], with 19 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Potassium===
====Molecular Structure====: [[Potassium]] has the [[Chemical FormulaSymbol|chemical formulasymbol]] [[Potassium|K]].: [[Potassium]] [[atom]]s join together in a [[Giant Metallic Structure|giant metallic structure]].====Atomic Structure====
: The most [[Stable Isotope|stable isotope]] of [[Potassium]] has 20 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 39.
: An [[atom]] of [[Potassium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Potassium]] [[ion]]s have lost an [[electron]] to become [[Positive Charge|positively charged]].
====Properties====
: [[Potassium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Sodium]] but less [[Reactivity|reactive]] than [[Rubidium]].
: [[Potassium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Potassium]] [[Oxidation|oxidises]] quickly in the presence of [[Oxygen]] so it must be stored in [[oil]].
: [[Potassium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Potassium Hydroxide]].
: [[Potassium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 63.5 [[Degrees Celsius|°C]].
===References=======AQA==== : An [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 ''Potassium, pages 42-4, 134, 275, 285, 346, GCSE Chemistry; Student Book, Collins, AQA '']:[atomhttps://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 ''Potassium; chloride, pages 44, 71, GCSE Chemistry; 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 ''Potassium; dichromate (VI), page 243, GCSE Chemistry; Student Book, Collins, AQA ''] of [:[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 ''Potassium; hydroxide, pages 148-9, GCSE Chemistry; Student Book, Collins, AQA '']] has only 1 :[[electronhttps://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 ''Potassium; iodide, page 115, GCSE Chemistry; Student Book, Collins, AQA '']] in its :[[Outer Shell|outer shellhttps://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 ''Potassium; oxide, page 35, GCSE Chemistry; 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 ''Potassium; sulphide, page 91, GCSE Chemistry; Student Book, Collins, AQA '']] :[[ionhttps://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 ''Potassium-40, page 122, GCSE Physics; Student Book, Collins, AQA '']]s have lost an ====OCR====:[[electronhttps://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 ''Potassium, pages 123, 132-133, 148, 196-198, 292, Gateway GCSE Chemistry, Oxford, OCR '']] to become :[[Positive Charged|positively chargedhttps://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Potassium, pages 174, Gateway GCSE Physics, Oxford, OCR '']].