Intro to Gas Laws

Gas Laws and Properties

Temp. Vs. Pressure

Multiple Choice

Select the true statement:

• Pressure increases as temperature increases because the particles have more energy and more collisions occur.

• Pressure decreases as temperature increases because the particles have more energy and more collisions occur.

• Pressure increases as temperature increases because the particles have less energy and less collisions occur.

• Pressure decreases as temperature increases because the particles have less energy and less collisions occur.

Applications of P vs T in the real world

• Tire pressure being lower in the winter

Temp. Vs. Volume

Multiple Choice

Based on the relationship between temperature and volume, what would you expect to happen to a balloon on a hot summer day?

• The particles in the balloon would take up less space so the balloon would shrink.

• The particles in the balloon would take up less space so the balloon would expand.

• The particles in the balloon would take up more space so the balloon would shrink.

• The particles in the balloon would take up more space so the balloon would expand.

Applications of T vs V in the real world

• Party city and other stores that sell balloons will ask whether the party will be indoors or outdoors and will fill the balloon with helium accordingly.

• If the balloons will be outside on a hot day, the attendant will fill the balloons with less helium so the balloons so not pop!

• If the balloons will be outside on a cool day, the attendant will fill the balloons with more helium so the balloons do not shrivel up!

Number of Molecules vs. Volume

Multiple Choice

If you lower the pressure of a metal container, what will happen to its temperature?

• Increase

• Decrease

• Stay the Same

Multiple Choice

If you increase the temperature of a balloon, what will happen to its volume?

• Increase

• Decrease

• Stay the Same

Multiple Choice

If you decrease the volume of a container, what will happen to it’s pressure?

• Increase

• Decrease

• Stay the Same

Multiple Choice

If you increase the amount of molecules in a container, what will happen to the volume?

• Increase

• Decrease

• Stay the Same

Open Ended

Think back to the Can Crush, how can we maximize the can crush in the experiment?