What is the Kinetic Theory of Matter in Physics?

Answer: The kinetic theory of matter which is also known as the particle theory states that all matter consists of many very small particles which are constantly moving or in a continual state of motion. The amount of energy they have and their relationship to other particles determine the extent to which the particles move. The word ‘particle’ is used because the precise nature of particles does not have to be specified. The particles might be atoms, molecules, or ions.