Final Answer:
The statement that collisions of gas particles are perfectly elastic means that no energy is lost during each collision. Therefore, the correct answer is A).
Step-by-step explanation:
In a perfectly elastic collision, kinetic energy is conserved, implying that the total kinetic energy of the colliding particles remains constant before and after the collision. This conservation means that no energy is dissipated or lost during the collision. When gas particles collide in an elastic manner, their kinetic energy may transfer between particles, but the total energy within the system remains constant.
Consider two gas particles colliding: their total kinetic energy before the collision equals their total kinetic energy after the collision in a perfectly elastic scenario. This conservation principle holds true even if the direction or speed of the particles changes post-collision. This concept is fundamental in the kinetic theory of gases, where the assumption of perfectly elastic collisions aids in explaining various gas properties based on the behavior of gas particles.
Understanding the principle of perfectly elastic collisions is crucial in comprehending gas behavior. This assumption assists in explaining phenomena such as pressure, temperature, and volume relationships observed in gases. It implies that in an ideal gas system, when particles collide, no energy is dissipated as heat or lost during the collision, allowing for a more accurate prediction of gas behavior and properties. Therefore, the correct answer is A).