Gas Law Demos

How much space (volume) should one mole of a gas take up at STP?  

• 24.4 L

• 22.4 L

• Cannot determine

What happens in a bell jar?  

• Vacuum sucks out all the air

• Internal heater warms up the sample

• Cooling mode freezes the sample

How did opening the valve and allowing the air back in the jar affect pressure?  

• Increases

• Decreases

• Stays the same

How did opening the valve and allowing the gas back into the bell jar affect the volume of the orange balloon?  

• Increases

• Decreases

• Remains the same

Why did the marshmallows grow in the bell jar?  

• Pressure increases

• Temperature increases

• Pressure decreases

• Temperature decreases

Why did the soap expand when it was heated in the microwave?  

• The particles were moving faster and spreading out

• The particles were moving slower and spreading out