J-Stace The Science Ace Shows Us How to Pick Ice with a String

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Let’s go ice fishing!



  • Empty Glass or Bowl
  • 5-6 Pieces of Ice
  • 1/2 Cup Water
  • Piece of String
  • 1/2 Teaspoon Salt



  1. Put 5-6 pieces of ice into an empty glass or bowl.
  2. Next, add the water into the glass.
  3. Try to use the string to pick up a piece of ice. You will find that it isn’t possible.
  4. Next, lay the piece of string over the ice.
  5. Sprinkle the salt over the string and wait for a minute.
  6. After a minute has passed, pick up the string and watch what happens.


Science Behind the Experiment 

When the salt comes into contact with the ice, it causes the ice to melt a little. The ice then quickly refreezes around the string. This causes the ice to stick to the string when it is pulled out of the glass.

This same concept is used when you add salt to your driveway or sidewalk during the winter. The salt changes the freezing point of water and causes ice to melt so you can more easily remove it.


Science Phrase of the DayFreezing point is the temperature at which a liquid turns into a solid when cooled.