Answer: The amount of movement of the particles depends on the amount of Force acting on them and their relationship to other atoms.
Explanation: The amount of movement of the particle depends on the amount of force acting on them and their relationship with other atoms i.e. the inter-atomic force acting. If the inter-atomic distance is small, more force would act and there would be less movement of the particles. For example in solids. As the inter-atomic force reduces, the inter-atomic distance increases, the amount of movement increases. For example in liquids and gases.