Gas Pressure / Factors that affects the pressure

When temperature increases, the particles gains KE, moves faster, so collide against the walls more frequently and with more force since KE increases Greater change of momentum, So more force, So pressure increases. Where as then temperature decreases, particles collide less frequently, so less pressure because less change of momentum and less force.

When volume increase, the particles collide less frequently so less change of momentum so less force so therefore less pressure. When volume decrease, less space, so collide more frequently against the walls of the container, so greater change of momentum, so greater for so pressure increases.

When no. of particles increases, collide more frequently, so greater change of momentum, so greater force so more pressure. Vice versa.