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[[Hydrogen]] is a [[gas]] that can catch fire easily.
==Key Stage 3==
[[File:HydrogenSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Hydrogen]].]]
[[File:H-1_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Hydrogen]] [[atom]] with 1 [[proton]] in the [[Atomic Nucleus|nucleus]] and 1 [[electron]] orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Hydrogen]] is a [[non-metal]] [[element]] with 1 [[proton]] in the [[Atomic Nucleus|nucleus]].
==Key Stage 4==
[[File:HKS4.png|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Hydrogen]].]]
[[File:H-1_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Hydrogen]]-1 [[isotope]] with 1 [[proton]] in the [[Atomic Nucleus|nucleus]] and 1 [[electron]] in its [[Outer Shell|outer shell]].]]
===Meaning===
[[Hydrogen]] is a [[non-metal]] [[element]] with 1 [[proton]] in the [[Atomic Nucleus|nucleus]].
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Hydrogen; as a fuel, pages 206, 207, 260, GCSE Chemistry, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Hydrogen; test for, page 126, GCSE Chemistry, CGP, Edexcel '']
====OCR====
:[https://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 ''Hydrogen, pages 178-179, 186-187, Gateway GCSE Physics, Oxford, OCR '']