8.6 pressure, volume, and temperatuur in gasses

• Science
• Middelbare school
• vwo
• Leerjaar 2

Lessen Objectives

• Explain the link between pressure, volume and temprature in gasses

• Descibe what happens to the particles in a gas if the temparture of that gas increases

• Explain what is meant by a relationship in science and what a directly proportinal relationship and an inverse relationship are

• Explain what is meant by athmosphereic pressure

   

Recap 8.5

Keep volume and mass constant. What happens to pressure when you change the temperature?

Pressure and temperature

At a constant volume and mass, the pressure of a given amount of a particular gas is directly proportional to its temperature. 

When the temperature is increased the molecules in the gas move faster, exerting a greater pressure on the wall of the gas container. If the temperature is decreased, the pressure goes down. Therefore, at a constant volume, the pressure of a particular gas is directly proportional to the temperature.

Link between volume of a gas and temperature keeping mass and pressure constant

Link between volume and temperature 

As the temperature of a gas increases its volume increases 

As winter approaches, many motorists will observe that the tyres look a bit less full than they should. The main reason for this is the dropping temperatures, which cause the air to become denser and consequently lower the tyre pressure. 

phet.colorado.edu