The kinetic theory of gases explains the the relationship between the pressure, temperature and volume of gases base on the following assumptions:
- The gas consists of very small particles, each of which has a mass.
- These particles are in constant, random motion.
- The rapidly moving particles constantly collide with each other and with the walls of the container. All these collisions are perfectly elastic.
- There are forces of attraction between particles of matter. These attraction forces will increase as the distance between the particles becomes closer.
- The average kinetic energy of the gas particles depends only on the temperature of the system. The higher the temperature, the higher the kinetic energy of the particles.