How does the kinetic particle model explain pressure in closed containers?

The kinetic particle model explains pressure in closed containers as a result of particles colliding with the container walls.

In the kinetic particle model, particles are in constant, random motion. This model is used to explain the properties and behaviour of gases. In a closed container, the gas particles are moving in all directions and at different speeds. When these particles hit the walls of the container, they exert a force on the wall. The total force exerted by all the particles hitting the wall per unit area is defined as the pressure of the gas.

The pressure depends on two factors: the number of collisions and the force of each collision. If the number of particles in the same volume increases, the number of collisions with the walls will also increase, leading to a higher pressure. Similarly, if the particles move faster, they will hit the wall with more force, also increasing the pressure. This is why heating a gas (which increases the speed of the particles) will increase its pressure, assuming the volume is kept constant.

In summary, the kinetic particle model explains pressure in closed containers as the result of countless tiny impacts of gas particles against the container walls. The pressure is determined by the number of these impacts and the force of each impact, both of which can be influenced by changes in the number of particles or their speed (temperature).