* No energy is lost during collisions. When gas particles collide, they bounce off each other without any loss of kinetic energy. This is in contrast to real-world collisions where some energy is always lost as heat or sound.
* The total kinetic energy of the system remains constant. Since no energy is lost, the total kinetic energy of all the gas particles in the system stays the same.
* The average kinetic energy of the gas particles is directly proportional to the absolute temperature. Because the collisions are perfectly elastic, the temperature of the gas is directly related to the average speed of the particles.
In reality, collisions are not perfectly elastic. There is always some loss of energy due to factors like intermolecular forces. However, the assumption of perfectly elastic collisions is a good approximation for ideal gases at low pressures and high temperatures.
