1. Gas Behavior

2. Measuring Gases Gases can easily contract and expand To measure gases we need to know 3 things – Volume – Temperature – Pressure

3. Volume Remember: Volume is the amount of space an object takes up. Remember: Volume is measured in L, mL, and cm 3 Because gas particles move and fill all available space, the volume of the gas is the same as the volume of it’s container

4. Temperature Recall that temperature is the average movement of all the particles in the gas – Higher temp = faster movement of particles – Think of a thermometer as a speedometer for the particles in the substance

5. Pressure Gas particles are constantly moving, they collide with the walls of their container resulting in a push. This push is the pressure of the gas. Pressure is measured in Pascal's (Pa) or Kilopascals (kPa)

6. Pressure High pressure inside the basketball keeps it inflated. There is a high concentration of gas particles inside the ball. Digging deeper: this is all relative to the pressure outside of the ball, remember the marshmallow?

7. Slinky Gas pressures want to be at equilibrium! However it very easy to prevent this

8. Boyle’s Law: Pressure and Volume Remember: in gases temperature, pressure and volume are related! Temperature: Constant Pressure: Increases Volume: Decreases Temperature: Constant Pressure: Decreases Volume: Increase This is what you observed with the marshmallow

9. Pressure and Temperature Temperature: Increases Pressure: Increases Volume: Constant Temperature: Decreases Pressure: Decreases Volume: Constant Higher temp = faster particle movement = more hits more often

10. Charles's Law: Volume and Temperature Temperature: Increases Pressure: Constant Volume: Increases Temperature: Decreases Pressure: Constant Volume: Decreases