Question

LIST the basic ideas of the kinetic molecular theory.

Answer 1

1. Particles: Matter is made up of tiny particles (atoms, molecules or ions) that are in constant motion.

2. Motion: The particles are in continuous random motion, moving in straight lines until they collide with other particles or the walls of the container.

3. Size and Volume: The particles themselves have negligible volume compared to the volume of the container they are in.

4. Distance: The average distance between particles is large compared to the size of the particles themselves.

5. Energy: The particles possess kinetic energy due to their motion.

6. Temperature: The temperature of a substance is directly related to the average kinetic energy of its particles.

7. Elastic Collisions: When particles collide, they do so without losing any energy, resulting in elastic collisions.

8. Attractive and Repulsive Forces: Particles can experience attractive or repulsive forces when they come close to each other, but these forces are generally negligible compared to their kinetic energy.

9. Pressure: The pressure exerted by a gas is a result of the collisions of its particles with the walls of the container.

10. Assumptions: The kinetic molecular theory is based on certain assumptions, including the idea that the particles are point masses with no volume, and that the interactions among the particles are negligible except during collisions.