<Dd> 2 . Quantum - mechanical effects are negligible . This means that the inter-particle distance is much larger than the thermal de Broglie wavelength and the molecules are treated as classical objects . </Dd> <Dd> 3 . Because of the above two, their dynamics can be treated classically . This means that the equations of motion of the molecules are time - reversible . </Dd> <Ul> <Li> The average kinetic energy of the gas particles depends only on the absolute temperature of the system . The kinetic theory has its own definition of temperature, not identical with the thermodynamic definition . </Li> <Li> The elapsed time of a collision between a molecule and the container's wall is negligible when compared to the time between successive collisions . </Li> <Li> Because they have mass, the gas molecules will be affected by gravity . </Li> </Ul> <Li> The average kinetic energy of the gas particles depends only on the absolute temperature of the system . The kinetic theory has its own definition of temperature, not identical with the thermodynamic definition . </Li>

What is the meaning of kinetic molecular theory