That would be Helium
Usually helium, the lightest noble gas. You can make a balloon or bag float with hydrogen gas, but it is flammable. Pure nitrogen is only slightly lighter than air, so it would not lift very effectively.
Fill a balloon part way with helium, make an animal out of it and have it float.
When a light gas like heliumis placed in a balloon, it will float.
Heilum combined with the light material of the balloon make it as light as air making it float.
Helium goes into a balloon to make it float.
helium gas
gas yes boy
Helium gas is lighter than air and hence balloons filled with helium will float in air.
Usually helium, the lightest noble gas. You can make a balloon or bag float with hydrogen gas, but it is flammable. Pure nitrogen is only slightly lighter than air, so it would not lift very effectively.
gas
Fill a balloon part way with helium, make an animal out of it and have it float.
Hydrogen can make a balloon float. Nitrogen, argon, and chlorine will not. However, hydrogen is combustible and in a balloon that cam near an ignition source, could produce a fire or explosion. The preferred gas for balloons, if cost is not an issue, is helium, which does not burn and is still very light.
When a light gas like heliumis placed in a balloon, it will float.
Heilum combined with the light material of the balloon make it as light as air making it float.
No, the density is too high.
The gas inside of a balloon is less dense than the air outside of it if the balloon floats. If the balloon does not float the density of the gas inside of it is equal to or more dense than that around it.
Helium goes into a balloon to make it float.