Pressure
- P = F/A
- P: pressure (Pa)
- F: force (N)
- A: area (m2)
Gases
- at higher pressures
- gases compress
- gas particles collide more frequently and
- exert more pressure on the walls of the container
- at higher tempratures
- gas particles have more thermal energy and then
- more kinetic energy
- so they collide more frequently and
- exert more pressure on the walls of the container
Temperature vs pressure
(assuming constant volume)
- as temperature increases,
- gas particles have more thermal energy
- transfers to kinetic energy
- so they exert more pressure on the walls of the container
Triple Science Only
Pressure
- pressure produces a net force at right angles