Day 3 Gas Laws and Firs Law

What happen to the can

The can actually rapidly imploded when it reaches the surface of the water as we thought it would be.

Charles's Law I experiment

To find out the relationship between volume and temperature, we occupied the setup equipment above to give the flask a hot bath, a cold bath, and a room temperature bath, and we recorded three exact volume value of the syringe.

Volume vs. Temperature graph

This picture shows our calculation work of this experiment, and it also shows the linear relationship between volume and temperature under a stable/constant pressure.  The reason why the pressure of the air remains constant even when the volume of the air changes is because the heat is stored in the temperature - as the volume increases, the temperature increases.  The slope of the linear function, which is the coefficient, is 21.15 in our experiment.

Vacuum Chamber experiment

A balloon and a marshmallow were placed into a vacuum chamber.  When the pressured was reduced, the balloon and marshmallow expanded, and when the pressure was allowed back into the chamber, they both became smaller. However, the balloon stayed same size after the experiment while the marshmallow became smaller.

The heated syringe experiment

The flask was placed in hot water about 40° C, and this time we just held the plunger fixed instead of letting it go freely.  The flask and syringe were actually became hotter and hotter, which was caused by not letting them to expand the volume.  The heat went into the temperature and made the temperature increase.