Question

If you were able to see what was happening with the molecules of two liquids of

the same amount but with different thermal energies, what would you see?

Answer 1

In a gas, the distance between molecules, whether monatomic or polyatomic, is very large compared with the size of the molecules; thus gases have a low density and are highly compressible. In contrast, the molecules in liquids are very close together, with essentially no empty space between them: