Kinetic theory

Kinetic theory may refer to:

• Kinetic theory of matter: A general account of the properties of matter, including solids liquids and gases, based around the idea that heat or temperature is a manifestation of atoms and molecules in constant agitation.
• Kinetic theory of gases, an account of gas properties in terms of motion and interaction of submicroscopic particles in gases
• Phonon, explaining properties of solids in terms of quantal collection and interactions of submicroscopic particles
• Free electron model, a model for the behavior of charge carriers in a metallic solid
• Kirkwood–Buff solution theory, a theory for solutions linking macroscopic (bulk) properties to microscopic (molecular) details
• Kinematics, the part of mechanics that describes the motion of points, particles, bodies, and systems of bodies, without reference to the forces, energies and interactions that govern their motion