Final answer:
The order of increasing molecular movement is solids, liquids, and gases due to the varying strength of intermolecular forces in each state, with gases having the most molecular movement.
Step-by-step explanation:
The order of increasing movement of molecules from least to most is solids, liquids, and gases. In solids, atoms are closely packed and only vibrate in place. In liquids, molecules can slide past each other but remain in close contact. In gases, the molecules are far apart, move rapidly, and collide with each other and the container walls.
In summary, the kinetic molecular theory explains these differences due to the varying strength of intermolecular forces in each state of matter. The strength of these forces is strongest in solids, weaker in liquids, and virtually non-existent in gases, allowing for the corresponding increase in molecular movement.