Notes

1.Hydrogen and Oxygen where always close friends
2. They would always be found hanging out with each other
3. One day hydrogen decided to propose to oxygen
4. they were now married, close as could ever me, and were inseparable
5. Until one day they decided they've had enough of eachother
6. they decided to get divorced
How they form=In theory, it's easy to make water from hydrogen gas and oxygen gas. Mix the two gases together, add a spark or sufficient heat to provide the activation energy to start the reaction, and presto—instant water. Merely mixing the two gases at room temperature, however, won't do anything, like hydrogen and oxygen molecules in the air don't spontaneously form water.


Energy must be supplied to break the covalent bonds that hold H2 and O2 molecules together. The hydrogen cations and oxygen anions are then free to react with each other, which they do because of their electronegativity differences. When the chemical bonds re-form to make water, additional energy is released, which propagates the reaction. The net reaction is highly exothermic, meaning a reaction that is accompanied by the release of heat.
How they can separate=Splitting the hydrogen and oxygen in water is accomplished using a process called “water electrolysis" in which both the hydrogen and oxygen molecules separate into individual gasses via separate “evolution reactions." Each evolution reaction is induced by an electrode in the presence of a catalyst.