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chemistry question!

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chemistry question!
Explain the following observations.
a.Gases but not solids can be compressed easily.
b.A liquid expands more when heated than an equal volume of a solid.
Please answer my questions in english!tks
a The force of molecules in objects consists of attractive force and repulsive force depends on distance between each other.Molecules of gases have much farther distance than those of solids.So the molecules of gases attract each other and this makes gas compressed easily.
b Liquid has larger distance between molecules than solid.When heated,Molecules of liquid moves more violently than those of solid.Larger space makes movements more obvious.