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==Key Stage 4=====Meaning===[[Oxygen]] ('''O₂''')is a [[gas]]eous (at [[Room Temperature|room temperature]]) [[non-metal]] [[element]] with 8 [[proton]]s in its [[Atomic Nucleus|nucleus]]. ===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]].