

Source: ZOOM
KALEIGH: Do you think that I can get this ice cube out of this glass of water just using this piece of string? Wow, this is really hard. Oop, I almost got it. It's slipping off. See? I can't do it. But here's a way that I can.
This "Phenom" was sent to us by the kids at the Kelly Smith Elementary School in Francis, Florida. The magic ingredient is salt.
Sprinkle a little salt on top of the ice cube. Then drag your string across it. I'm going to put a little more salt on top. A little more... There we go. In about three minutes the string will be attached to the ice cube. Let's see what happens.
See the salt dissolving into the water? If you look closely, you can see that the top of the ice has changed. It's a lot rougher than it was at the beginning. Ta-dah! This is rising ice.
This happens because the salt melts the ice a little bit and forms a puddle on top of the ice cube. Then it refreezes a little bit around the string and, see, you have rising ice.
Salt does interesting things to ice. In the winter, it's used to melt ice on the streets.
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