Step 5Filling and Conatainment
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Now all you have to do is wait for the bottles to become filled with the gas coming from the electrodes. When doing this the unshielded wire's bottle should be filling faster, about twice as fast because water is two parts Hydrogen and one part Oxygen (and because they are both part of the diatomic BrINClHOF [If you have not taken Chemistry disregard this statement it's not important]). If the unshielded wire is making less than the shielded one, turning blue or falls off then you may have switched the charges.
If / when they do fill take the bottle cap of that bottle and make a ring around the inside of the cap and place it underwater and screw it on without letting air out or in. Once you do this use your marker to label it the bottle with the unshielded wire is Hydrogen and the shielded one is Oxygen if you did this correctly.
so with all that in mind, what combination of electrolytes and anode would be best?