Some names of gases include hydrogen, helium, oxygen, argon, krypton, neon, nitrogen, fluorine, chlorine, xenon and radon. Gases that are compounds include carbon dioxide, carbon monoxide, methane, nitrous oxide, ozone and hydrogen sulfide. Other types of gases include vapor and steam.
Gases are part of one of the three forms of matter, with solids and liquids. Gases have neither fixed shape nor fixed volume, so if a gas is put in a container, it takes on the container's shape and fills it. Some gases, such as hydrogen, radon and nitrogen, have neither color nor odor.
Hydrogen sulfide is a gas made up of two hydrogen atoms and two sulfide atoms that smells like rotten eggs. Carbon dioxide, a carbon atom and two oxygen atoms, is a waste product of human respiration and a byproduct of fermentation. It is also a greenhouse gas. Carbon monoxide bonds with hemoglobin in the blood, making it deadly because it brings no nutrients to the cells.
Ozone, which is a type of oxygen, protects the earth from the sun's ultraviolet rays, but it can also be a pollutant. Nitrous oxide is used as a sedative and is also called laughing gas, but it is also a greenhouse gas.