Describe the movement of molecules in solids, liquids, and gases. Be sure to explain why the molecules move differently in each state of matter.

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Explanation:

The degree of movement of molecules in each not the three different states of matter depends on the arrangement of the molecules.

In a solid, molecules are packed closely together and are held in fixed positions by strong intermolecular forces such that they can only vibrate or rotate about a fixed point.

In liquids, molecules are less closely packed hence they can flow around each other but possess only little kinetic energy. Intermolecular forces in liquids are much lesser than that of solids.

In gases, intermolecular forces are negligible and gas molecules move with a very high velocity and possess high kinetic energy. There are large spaces between gas molecules and they are always in motion.