- When pressure increases, temperature increases.
- When molecules are under pressure, they will begin colliding more, causing the temperature to increase.
- Temperature and pressure are directly proportional.
Prior knowledge & experience:
Students already know that temperature is the average kinetic energy of the molecules of a substance. They also know that gas molecules are rapidly moving, spread far apart, and collide often.
What do you think will happen to the temperature if we continue to increase the pressure inside the bottle using a fizz keeper cap?
The temperature will increase as the pressure increases.
Students think that as gases become pressurized, they turn into a liquid and lose energy. They think that the gas can be squished into a liquid.
Photographs and Movies
This is a graph showing the relationship between pressure and temperature.
The materials are a one liter soda bottle, a thermometer, and a fizz keeper pump cap which increases the pressure within the bottle.
Where to buy caps
Gas Law Demonstrations