Pressure in Gases

What do colliding gas particles create?

pressure

What do gas particles exert when they collide?

force

What is pressure?

Force acting per unit area.

What does the pressure a gas exerts on its container depend on?

-how fast the particles are moving
-how often they hit the (container) walls

What happens if you hold gas in a sealed container with a fixed volume and heat it?

-energy is transferred to the kinetic energy stores of the gas particles and they move faster.
-The particles hit the walls harder and more often and create more pressure

If you put the same amount of gas in a larger container what happens?

the pressure decreases as the container is bigger, there are fewer collisions between the gas particles and container walls.

Formula for pressure (Pa)

constant= pressure x volume

What happens when the pressure of a gas is increased? and what happens is the container is stretch?

-Increasing the pressure of a gas increases the force exerted on the wall of the container.
-If the gas is in a stretchy container like a balloon, this may cause the container to expand.

What happens when the pressure of a gas is decreased?

-Decreasing the pressure of a gas decreases the force exerted on the wall of the container.
-The gas outside the container also exerts a force on the container.
-As a result, the container may be compressed by the pressure of the gas outside the container.