sábado, 22 de abril de 2017

GROWING ICE 

MATERIALS

  1. 1 bottle of unopened mineral water
  2. ice
  3. A vessel or vessel
  4. freezer
HYPOTHESIS

THE IDEA THAT I WANT TO SEE IS LIKE ICE IS GROWN BY USING THESE MATERIALS.

PROCESS

Or first thing we have to do is put our water bottle in the freezer, between 120 and 160 minutes. It is important that the bottle is hermetically sealed. After this time we will see that the water is frosty or very cold, but not frozen. We put a few cubes of ice in a glass (also works with a single cube and you can put it on either side, the glass serves only to contain the falling water), open the bottle and we are slowly pouring the water on the ice, making it fall Always on the same spot for our ice "tower" to grow. Have you seen the video? Surprising! At the end of the video you will also notice that giving a blow or shake the bottle, the water crystallizes immediately ... what is happening?

This process is called superfusion or superfusion. In this process a liquid cools below its freezing point, without going into the solid state (this is what we have done when putting the bottle of mineral water in the freezer). The freezing point of the water is 0 °, but if it cools gradually and has no impurities (such as mineral water), its temperature can be lowered further without crystallizing. Well, our water will crystallize only in the presence of what is called "seed crystal" or "core", so our ice cubes: when it comes into contact with this core the water begins to form a crystal structure around it.






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