How To Freeze Water Faster

Have you ever wondered if there are tricks you can try to get the water in your freezer to freeze faster? There are many myths and wives tales about this problem. Yes, it is possible to freeze water faster with just a few adjustments to how you freeze it. In fact, learning how to freeze water faster makes a great science experiment. Here's how to freeze water faster:

  1. Remove water impurities. Regular tap water has impurities that make it freeze slower, since the water has a harder time reorganizing into ice crystals. Boiling the water to make distilled water will lower the freezing point. Using bottled water will also make the water freeze faster. Pure water will freeze at slightly warmer temperatures than salt water or water with other impurities. If you have a water filter, use filtered water rather than water that is straight from the faucet.
  2. Use colder ice cube trays. Using a cold ice tray will help the water cool faster. Using a copper tray rather than a plastic one could help the water freeze even faster, because it is a better conductor of heat. Either a pre-frozen tray or a metal tray will help remove the heat from the liquid water faster, helping it turn into ice.
  3. Increase the surface area. Freezing the same volume of water in a water bottle or other container will take much longer than freezing the same volume of water in ice cube trays that are only filled half full. The increased surface area will make the water freeze faster because more of the water comes into contact with the cold air at a given time. Spread the water out over a larger surface area if you want it to freeze faster.
  4. Use hot water. Surprisingly, hot water will freeze faster than the same volume of cold water. The hotter water is able to quickly organize itself into ice crystals. Boiling water will freeze faster than water that is already refrigerated. The boiling water molecules are already excited and moving around quickly. Unlike cold water, they will quickly move into the formation of ice crystals.

You can test these theories by freezing your own water. For example, test an ice cube tray of tap water against one of bottled water. Then, test a room-temperature tray against a tray that is pre-frozen or metal. Next, test a plastic bottle of water against an ice cube tray, and a tray of cold water against a tray of hot water.


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