4.3.3.2 - Pressure in gases

In a sealed container what does the pressure from gas molecules produce?

In a sealed container, the pressure produces a net force at right angles to the wall of the gas container

At what angle do gases exert a net force at?

Gases produce a net force at right angles to the wall of the gas container

How can a gas be compressed or expanded?

A gas can be compressed or expanded by pressure changes

What effect does increasing the volume of a gas have on the pressure of the gas? (if temp is constant)

If temperature is constant, increasing the volume of a gas means the particles get more spread out and hit the walls of the container less often.

This causes the gas pressure to decrease

What is the relationship between pressure and volume?

Pressure and volume are inversely proportional

(When volume goes up, pressure goes down)

Give the equation for pressure / volume for a gas HELD AT A CONSTANT TEMPERATURE.

pV = constant

Pressure x volume = constant

In which conditions does this equation only apply?

For a fixed mass of gas held at a constant temperature

Give the units for all the components in the equation.

Pressure - pascals , Pa

Volume = metres cubed, m3