Chemistry Gas Laws Lab

Station 1: Syringe: Compressibility of gasses and liquids

What happens to the pressure if the volume is made smaller?  Why? Explain.

The pressure increases.

Station 1:Syringe: Compressibility of gasses and liquids

What happens if you close the opening and let the piston go? Why? Explain.

The pressure inside decreases, and it closes fully. 

Station 1:Syringe: Compressibility of gasses and liquids

Was it harder to push the empty syringe, or the one filled with water?  Why?

The one filled with water because it was harder to push out a liquid than a solid. 

Station 2:Index card over a cup:

Explain why the water does not fall out of the cup?

This is because there is more pressure outside the cup than in the cup, allows the index card to stick to the water. 

 Station 2:Index card over a cup:

How would using a beaker or an Erlenmeyer flask affect the outcome of the experiment?

The shape and density of the glass beaker could affect the outcome of the experiment - would probably make the water spill.

Station 3: Can Crush

What is happening to the water molecules as the can is being heated?

As the can is heated the water molecules move faster and turn into steam and evaporates. 

Station 3: Can Crush

 What is happening to the air molecules as the can is being heated?

They are evaporating out of the can, as the liquid turns into gas.

Station 3: Can Crush

What happens to the can when it is placed in cold water?

The water that became vapor/steam inside turns back into water so it pours out. 

Station 3: Can crush

How did temperature affect the pressure inside the can?

When the pressure is decreased, the temperature is also decreased. 

Station 4:Pump up the Jam

What was the starting temperature?

23.6C

Station 4: Pump up the Jam

Did the temperature increase or decrease after pumping?

22.9C- decreased 

Station 4: Pump up the Jam

What was happening to the pressure inside the container?

The temperature decreases inside the container.

Station 4: Pump up the Jam

What is the relationship between temperature and pressure?

When the pressure decreases, the temperature also decreases inside the container.

Station 4: Pump up the Jam
Did the volume of the container stay the same or change?

Stayed the same

Station 5: Balloons!

What happens to the balloon when the temperature of the flask is raised? Explain.

The balloon inflates because the water turns into gas and it expands the balloon

Station 5: Balloons!

What happens when the flask is cooled? Explain.

The balloon deflated because the gas contracts as it cools down 

Station 5: Balloons!

On the particle level, what happens when the temperature is raised to the water and air molecules?

The molecules move faster and spread faster as well. 

Station 5: Balloons!

How does this affect pressure?

The temp and pressure increase.