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* Left: In the previous experiment you have boiled some drops of Cola in a cleaned Liquemin bottle: Water vapour left through the straw.
* Photo 2: Huge quantities of water vapour above the cooling tower of a power plant.
* Photo 3: Quickly turn the bottle with the boiling Cola upwards down and dip it into the container with cold red water.
Observation right: The upper vial is filled by a fountain of red water.
Explanation: In the beginning the bottle was not empty. It contained some drops of Cola (most of it water) and 6 ml of air. During boiling of Cola 6 ml of water vapour replaced the air inside the bottle. During cooling the bottle this water vapour was quickly transformed into a tiny drop of liquid water. Now the bottle was really empty sucking red water upwards.
Instead of boiling Cola in a Liquemin bottle you can also do that in an "empty" Cola can. The can sucks cooling water so vigorously that it collapses with a bang.