oxygen gas
What lungs need
Oxygen gas is the molecular form of oxygen (O₂) that exists as a colorless, odorless gas at room temperature and makes up about 21 percent of Earth's atmosphere.
It is essential for respiration in most living organisms and for combustion.
In technical and scientific contexts, specifying oxygen gas distinguishes the breathable diatomic molecule from oxygen in other forms, such as dissolved in water or bound in compounds.
- combustionExothermic reaction with oxygen
- fire triangleCombustion's essential trio
- welding torchFlame tool for fusing metal
- paramagneticWeakly attracted to magnets
- airGaseous envelope surrounding Earth
Joseph Priestley · photosynthesis · breathable · breathing apparatus · scuba tank · hemoglobin · respiration · ozone · oxidizing agent · element · steel production · rocket propulsion · space suit · suffocate · mitochondria · tank · diving · cylinder
- chalcogen compoundssulfur dioxide, hydrogen sulfide, SO2, sulfuric acid, ozone
- radiochemistryradiolysis, radiochemistry, ionizing radiation, gamma radiation, radiation dose
- gasesair, helium, nitrogen, hydrogen, argon
- elementshydrogen, carbon, helium, nitrogen, gold
- Nonpolarhexane, octane, benzene, toluene, methane
oxygen gascarbon dioxide
Respiration byproduct, photosynthesis fuel
carbon monoxide · asphyxiant · nitrogen gas · inert gas · chlorine gas
gas, oxygen, peroxide, oxidation, oxidize, oxide, antioxidant, oxidized, oxygenate