( P) is defined as the force of all the gas particle/wall collisions divided by the area of the wall: pressure = force areaĪll gases exert pressure it is one of the fundamental measurable quantities of this phase of matter. The accumulation of all these forces distributed over the area of the walls of the container causes something we call pressure.
Although collisions with container walls are elastic (i.e., there is no net energy gain or loss because of the collision), a gas particle does exert a force on the wall during the collision. The kinetic theory of gases indicates that gas particles are always in motion and are colliding with other particles and the walls of the container holding them. Learn the units of pressure and how to convert between them.
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