Gas pressure

Unit 6.5 Gas pressure

Let's start ..... :)

Poll

Which one is more painful?

Particles in Gaseous State

• are free to move around / move freely / move randomly (no fixed pattern) at ALL time
• gas particles have A LOT of energy

Gas particles

• Inside a container, the gas particles hit the walls as they move around

• each time a particle collide with the wall, it causes a tiny force.

• This force we called gas pressure.

1st Concept of Gas pressure)

• Aerosol can + fire

• Why explosion happens?

• Higher temperature, more pressure

Open Ended

Why this balloon will burst when place under the hot sunny day?

2nd Concept of Gas Pressure

• Less volume (space) more pressure

• Greater volume (space) less pressure