Gas Pressure / Gas

The gas particles moves in all direction randomly at high speed and colliding against each other. So in a containter, the particles will collide against the walls of the container. This causes change of momentum per unit time So there will be force exerted by the particles on the walls So since P=F/A so there is pressure exerted by the gas

Gas pressure increase when the particles collide against the walls more frequently So more change of momentum So greater force So greater Pressure