Dancing coin

Good day Steemit. This is a very interesting experiment, Try this is not difficult ))) thank you All who liked the post

Need: Bottle, coin, which can cover the neck of the bottle, water.
Experience: an Empty open bottle you need to put on a few minutes in the freezer. Wet the coin with water and cover it is removed from the freezer bottle. After a few seconds the coin will begin to jump and hitting the bottle to make sounds, similar to clicks.
Explanation: a Coin raises the air in the freezer shrank and took up less volume, and now has heated and started to expand.