helium gas
Lighter than air
Helium gas is the gaseous form of the element helium—colorless, odorless, and lighter than air.
The term is slightly redundant since helium exists as a gas under normal conditions, but it appears in technical contexts distinguishing the gas from liquid helium used in cryogenics: The balloon was filled with helium gas.
Inhaling helium gas temporarily raises voice pitch, a common party trick.
- balloonInflatable rubber sac
- party balloonInflatable celebration decoration
- birthday partyAnnual celebration of birth
- blimpNon-rigid flying vessel
- airshipSteerable lighter-than-atmosphere craft
float · lighter-than-air · squeaky · voice · high pitched · inhale · party · noble · inert · tank · cylinder · MRI · cryogenic · lift · buoyant · Hindenburg · weather balloon · dirigible
- interstellar mattercosmic dust, nebulae, nebula, dense clouds, dark clouds
- aerostatsaerostat, airships, blimp, balloons, zeppelin
helium gassulfur hexafluoride
SF₆ insulating compound
radon · radon gas · xenon · carbon dioxide · chlorine gas
helium gashydrogen gas
Simplest elemental molecule
chlorine gas · oxygen gas · flammable gases · ozone · nitrogen dioxide
helium, gas, gases, gassy, gaseous, gasify, heliocentric, heliograph, heliotrope