I think most of us have probably seen the little trick in which somone will place a burning candle in a bottle and get something like an egg to be pushed inside the bottle. How does this happen? I understand that a vacuum is created inside the bottle, and the normal outside air pressure pushes the egg in. Problem: I always thought the vacuum was because the oxygen in the bottle was combining with the wick material (i.e. less oxygen molecules flying around the inside of the bottle). However, the oxygen atoms are still there. They are simply attached to carbon, forming carbon dioxide. Right? Furthermore, oxygen and carbon combine with a great deal of energy, so that the CO2 molecules should be vibrating internally (source of the heat), bumping stuff around and thus creating MORE pressure. So why the vacuum? I know the vacuum exists, so that means my thinking/physics is screwed up somewhere. Can anyone help?