eli5 how ice is slippery. Is it being a solid with a little bit of water on it?
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There’s an interesting property of ice, which is that water expands when it freezes.
The opposite is also true, then when ice is compressed it causes it to melt.
Therefore when you step on ice, the pressure causes the thin surface layer to melt in response to the pressure of your foot. This makes it incredibly difficult to get any kind of grip on it
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