There are many chemicals found in a hot air balloon to make it rise. The main elements/chemicals are Helium and Hydrogen.
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The property of certain gases that cause a hot air balloon to rise would be that warm gases rise. This creates a convection current powering the balloon.
to make the perfect water balloon, simply use a regular water balloon rather than a water balloon. regular water balloons can get as big as a human head. the down side is they don't pop easily. you can drop them on the floor and they wont pop.
Balloon twisting is the art of using balloons to make different animals and objects out of balloons. Simple objects can be made from a single balloon and multiple balloons can be twisted to make larger or more intricate designs and objects. A balloonologist is a person that practices balloon twisting, usually as a form of entertainment, rather than just a hobby.
you set paper on fire and then spit on it
Chemicals to make sick people better
taking chemicals and mixing them together.