[Insert witty title regarding water electrolysis here]

  In this last week's lab, the objectives were: one, find the balanced chemical equation of the reaction, two and three, find and "prove" qualitative and quantitative data, and four, draw a particle diagram.
  The idea of the lab was to separate Hydrogen and Oxygen from each other using baking soda to conduct electricity. The baking soda thus seems relevant to the chemical equation, but it is not. This was a concept I had trouble wrapping my head around. After I had managed, however, the chemical equation that emerged was simply:

2 H2O --> 2 H + O2

This is shown in the particle diagrams here, (drawn and digitalized by me):

The lightning symbol represents electricity (shocking) and the baking soda in the water. 

  The qualitative evidence of this reaction is primarily the fact that the tubes started full, and then slowly began to empty, partially because of the reaction, but also partially due to leaking. Another piece of qualitative evidence was the bubbles. If nothing had been happening, the bubbles wouldn't have been there. 

  The quantitative evidence requires a bit of background. To begin, the difference between the gases in the tubes must be proven to prove the 2 to 1 ratio of Hydrogen to Oxygen. Using a universal indicator, the pH of both tubes was tested, before and after the reaction. Prior to the reaction, both pHs were the same. After, one tube was more acidic, the one on the positive side was more acidic, leading to the conclusion that this tube was Hydrogen, the other Oxygen. When the fullness of the test tubes was observed, the tube with Hydrogen was emptier, proving that the gases were dissolving in a 2 to 1 ratio. 

The starting point for the experiment. As you can see, a bit of water has escaped already due to me not filling the cup it was in soon enough.

The final result before I dumped out the water. I hadn't realized it was leaking until I lifted the battery it was on (blocked by my pinky finger) and found a puddle underneath.