Question

Why is glass sometimes called a supercooled liquid?

Answer 1

Glass is sometimes called a supercooled liquid because it does not form a crystalline structure, it is an amorphous solid that allows flowing, though very slowly. You can observe this property of glass in window panes of old buildings. such glasses will be thicker at the bottom and thinner at the top.this shows its ability to flow which is normally shown by fluids.
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Answer 2

Answer:

Just like a liquid, glass also flows from top to bottom but very slowly. For this reason, glass is also considered a supercooled liquid.