phet simulation. click solid, liquid, or gas to observe the behavior of molecules. how does the behavior of…

Brief Explanations:

In solids, molecules have low energy and are closely - packed with little movement. In liquids, they have more energy and can move past each other. In gases, molecules have high energy and move freely. The behavior change is due to the balance between intermolecular forces and the kinetic energy of molecules.

Answer:

It changes by the balance between the molecules energy. The molecules in solids have low energy and are in fixed positions. In liquids, they have more energy and can slide past one another. In gases, molecules have high energy and move freely because the intermolecular forces are much weaker compared to solids and liquids.