eli5 how ice is slippery. Is it being a solid with a little bit of water on it?
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You’ll hear that the top layer of ice melts but that’s not quite true. Current theory is that the very tippy top layer of molecules are kinda loose because they don’t have as much holding them in place. So they roll around like a hyper thin layer of marbles.
For people who are older than 5, the molecules are ‘loose’ because when water freezes the molecules from into a hexagonal crystalline structure which is very stable. But the very top layer of molecules don’t have enough molecules around them to form this structure so they aren’t held in place quite as hard. Source: QI.
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