Chem Gases Unit Spring 2021

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change

Gas molecules can easily be compressed because ___________.

• gas molecules are soft

• gas molecules are far apart

• gas molecules follow the shape of the container

Pressure is caused by ______.

• gravity.

• gas molecules colliding with each other.

• gas molecules colliding with surfaces of the container.

• gas molecules reacting with each other.

Which container will have lower pressure?

• left
• right
• they both have the same pressure

You need a s'more NOW so you use your microwave. What happens to the volume of the air bubbles inside the marshmallows while it is being cooked?

• It increased

• It decreased

• It stayed the same

How could you make the stopper pop out of the flask?

• Decrease pressure
• Decrease temperature
• Increase volume
• Increase temperature

How could you "re-inflate" the balloon?

• Heat the balloon up 
• Cool the balloon down
• Remove some helium
• Ask the balloon to re-inflate

What relationship can be interpreted from the diagram?

• As volume decreases, pressure decreases

• As pressure increases, volume increases

• As moles increase, temperature increases

• As pressure increases, volume decreases

What happens to the average kinetic energy of matter when it is heated?

• It increases
• It decreases 
• It doesn't change
• It cannot be determined

Gases have...

• A definite shape and volume
• A definite shape but no definite volume
• No definite shape but a definite volume
• No definite shape or volume