3/3 Ideal Gas Law, Pressure, and Volume

We use the Ideal Gas law equation to derive the units in which Area is expressed in.

We use formulas related to pressure to help find the height of the water inside the bell.

These are the sacrificial marshmallows used in the experiment of lowering surrounding pressure.

This is the graph we found that shows the relationship of Pressure and Volume

We were asked to find the height of the water inside the bell using the given information.

We are testing to see what happens to a frictionless piston when the air inside of the tube is increased in temperature.

These are our predictions as to what causes the piston to move.

We are asked to name all of the units we know that measure pressure.

This is our prediction of the relationship between Pressure and Volume.

This is the graph our experiment resulted in and shows a linear relationship between temperature and pressure.

After the flask has been placed into hot water, we put the flask in a glass of ice water to see how the piston would react.

We lowered the pressure surrounding the balloon to see if the balloon would expand or shrink.

These are the marshmallows before the pressure is lowered. We have one marshmallow to compare the difference in size after the experiment.

Here is a side by side comparison of the before and after of the marshmallows with the control marshmallow on the right. 

Summary: We are introduced to the Ideal Gas Law. Using the ideal gas law formula, we derived different formulas that calculate for volume, pressure, and temperature. We found the relationship between volume and pressure using the Ideal Gas Law. We also learned how pressure is calculated and how important it is to be aware of pressure. We were shown an example in class of a video of a  gigantic tank imploding because the outside pressure varied too much from the pressure inside the tank. A balloon and marshmallows were used in an experiment where air was sucked out of a closed volume to observe the change in volume of the objects.