The balloon and heater experiment is an example of Charle's Law, because when heat is added to the balloon the molecules move faster and expand. The reaction to this is the volume and pressure increase causing the density to decrease and the balloon rises. When the balloon rises the temperature decreases causing the volume the decrease and making the density in the balloon to increase and make the balloon fall.

The tire inflate experiment would be and example of Boyle's Law, because adding pressure into the bottle causes the bottle to expand and making the volume of the syringe to increase. When letting out the pressure the volume decreases and the bottle would contract the temperature would never change in this experiment.

The egg in the bottle with hot water is and example of Gay-Lusac's Law, because when the hot water is in the bottle causes the molecules to move faster When the egg is put on top of the bottle the pressure on the inside of the bottle doesn't change, but the pressure on the outside of the bottle increases pushing the egg inside of the bottle.