The Gas Laws

Boyle's Law
State's that temperature stays constant, if the pressure goes up, the volume goes down.
This is like pipet, the blue liquid, and the books. The temperature in this experiment stood at a constant temperature. The pressure went up because the books compressed the air in the pipet. This caused the volume to go down, because the books compressed the pipet and pushed the liquid farther out.

Gay-Lussac's Law
This law states that the volume stays constant, the pressure and temperature are directly
related
This law is also like what happened in the balloon going into the flask, the amount of the gas in the flask stood the same while the temperature changed and the pressure pulled the balloon into the flask. When the flask cooled down, the molecules slowed and contracted, this pulled the balloon into the flask.

Charles' Law
This law shows that if there is a constant pressure, the temperature and volume are directly related
This is like what happened in the balloon in front of the heater. The balloon has a constant pressure, when the heat went up, the volume went down. Causing the balloon to float The heat made the molecules speed up and expand, making the balloon expand and made the volume go up. Since the mass was the same, the density went down and the balloon floated. When the balloon floated away from the heater the molecules cooled down, contracted, the density increased and the balloon fell.