kinetic theory

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kinetic theory In physics, a theory dealing with matter in terms of the forces between particles and the energies they possess. There are five principles to the kinetic theory: matter is composed of tiny particles; these are in constant motion; they do not lose energy in collision with each other or the walls of their container; there are no attractive forces between the particles or their container; and at any time the particles in a sample may not all have the same energy.