Final answer:
The kinetic-molecular theory of gases includes the concepts of constant motion, inverse relationship between pressure and volume, temperature as a measure of average kinetic energy, and small particle size compared to distances. The concept that is NOT a part of the theory is...
Step-by-step explanation:
The kinetic-molecular theory of gases has several assumptions. First, particles of a gas are in constant motion and collide with each other and the container walls.
Second, the pressure and volume of a gas are inversely related according to Boyle's Law. Third, temperature is a measure of the average kinetic energy of the gas particles. Finally, the particles of a gas are very small compared to the distances between them and there are no forces of attraction or repulsion between them.