Name: ______Date: ______Period: ______

Gas Laws Labs

Station 1: Pressure Units & Kelvin Temperature Conversions

1 atm = 760 mmHg = 760 torr = 14.7 psi = 101.3 kPa

550 mmHg = ______kPa 325 kPa = ______atm 55 psi = ______mmHg

48.0 mmHg = ______torr 2284 torr = ______kPa 1.85 atm = ______mmHg

K = °C + 273

26.0 °C = ______K 400 K = ______°C 100 K = ______°C

135 °C = ______K -127 °C = ______K 4 K = ______°C

What is the temperature of a sample of gas that has double the kinetic energy (motion energy) of a sample of gas at 80°C?

Station 2: Does air have mass?

Mass balloon + air / Mass of just balloon / Mass of air

What does this experiment prove?

When you “blow up” a balloon what are you adding to it? Which variables are changing?

Station 3: HOT WATER!

Temperature / Circumference (cm.) / Sketch the graph of what happened below: (Be sure to label the axes.)


Cold
Room
temperature
Hot

What variables changed in this experiment?

Which variables remained constant?

As ______(increased/decreased) ______(increased/decreased.)

Station 4: Cartesian Diver

Sketch the graph of what happened below: (Be sure to label the axes.)

BEFORE AFTER

What variables remained constant during this experiment?

Which variable did you change?

What variable was affected by that change?

What happened to your diver? Why?

As ______(increases/decreases), ______(increases/decreases.) The diver sinks because its density has increased/decreased as a result of its ______changing but its mass staying the same.

Station 5: The Collapsing Can

Before / After

What happened to the soda can?

What variables were changed?

What variables remained constant?

Analysis: As ______rapidly decreased, ______increased/decreased. This caused the ______outside the can to be much ______then inside and so the can imploded!

Station 6: Marshmallow in a Vacuum

Before
(Sketch initial Observations) / After
(Sketch final Observations)

What happened to the marshmallow when you pulled on the syringe?

What variable was changed?

As the volume inside the syringe ______the ______decreased. This caused the marshmallow to ______.

Station 7: Incredible Straw

Explain what happens when you try to drink the water in the glass simultaneously through both straws. (Be sure to discard used straws in the trash can.)