Synthesis of Water

Now that we have decomposed water to its separate elements, let's synthesize the elements to make water. Take a candle (one a little bigger than this works better) and put it on the cap of a jar.
Once it is lit, put the jar on the lid and screw it shut.

Once the candle has used up all the free oxygen, and goes out, water will form on the inside of the jar. The oxygen and hydrogen have synthesized into water.
You can open the jar and if you are quick you can feel the water before it

evaporates away.