Helium
HELIUM
Helium
Helium to get them to float.
Helium
Hot air is used for hot air balloons.
Helium is a gas used to inflate lighter than air balloons.
No you need a special type of balloon.
Hydrogen, until the Hindenburg,then everyone realized that "Hey, Hydrogen isn't that safe to use!"Hot air balloons, you mean?? Just air that is hot.Actual hand balloons and such? Helium or again, just air. Helium floats better because it is lighter than the surrounding air around it. Helium and air are still used in both.
Helium is the safest gas to fill in balloons, as it is light and noncombustable.
Any gas- but if you want them to SAFELY float, use helium.
gas tank, plastic, wood
Much to his enjoyment, the balloons floated around Alfred's room on his birthday.