Changes

: [[Hydrogen]] [[Chemical Reaction|reacts]] with [[Oxygen]] to form [[water]].

#Collect the [[gas]] in a [[Test Tube|test tube]].

#Place a lit [[Wooden Splint|splint]] over the mouth of the [[Test Tube|test tube]].

#If a 'squeaky pop' [[sound]] is made then the [[gas]] is [[Hydrogen]].