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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]].