Gas Pressure

Gas pressure

The force per unit area exerted by the gas molecules as they collide with the surface of an object

Gas kinetic theory

The molecules in the gas move randomly and constantly collide with the walls of the container

Effect of change in gas density on gas pressure

The higher the density of gas, the higher the pressure of gas

Effect of gas temperature change on gas pressure

The higher the temperature of gas, the higher the pressure of gas

Effect of gas volume change on gas pressure

The lower the volume of gas, the higher the pressure of gas

Instruments used to measure the pressure of a gas in a container

Bourdon gauge or manometer

Manometer

Consists of U-shape tube filled with some liquid (usually mercury)

Bourdon gauge

Manometer

Gas molecules that collide with the walls of the container....

.....undergo a change in momentum