Nitrogen is one of the chemical elements in the periodic table; whose chemical symbol is N and its atomic number is 7. Nitrogen is usually in the form of a gas, non-metal, inert, colorless, tasteless and odorless diatom, which covers 78% of the earth's atmosphere and is the main element in living tissues. ...
Acetylene or ethene is the smallest member of the hydrocarbon alkyne family, which is made of two hydrogen atoms and two carbon atoms that have a triple bond. Due to the presence of this triple bond, acetylene is known as an unsaturated chemical substance. Acetylene is of particular importance in industry. ...
Oxygen is a chemical element with symbol O and atomic number 8. Oxygen, a member of the chalcogen group in the periodic table, is a highly reactive nonmetal and an oxidizing agent that readily oxidizes with most elements as well as with other compounds. Oxygen is the most abundant element on Earth and ...
Argon is a chemical element with the symbol Ar and atomic number 18, which is in-group 18 of the periodic table and is a noble gas. Argon is the third most abundant gas in the Earth's atmosphere with 0.934% (9340 ppmv). It is more than twice as abundant as water vapor (which averages about 4000 ppmv, ...
Carbon dioxide (chemical formula CO2) is a chemical compound that is a colorless gas with a density about 53% higher than the density of dry air. Carbon dioxide molecules consist of one carbon atom that is covalently bonded to two oxygen atoms. It occurs naturally in the Earth's atmosphere as a trace ...
Methane (US: /ˈmɛθeɪn/ MEH-thayn, UK: /ˈmiːθeɪn/ MEE-thayn) is a chemical compound with the chemical formula CH4 (one carbon atom bonded to four hydrogen atoms). It is a group 14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane in the earth makes ...
Helium (from Greek: ἥλιος, Roman: helios, lit. 'Sun') is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monoatomic gas. In the group of noble gases in the periodic table [a] and its boiling and melting point is the lowest among all elements. ...
Hydrogen is a chemical element with symbol H and atomic number 1. Hydrogen is the lightest element and in standard conditions, it is a diatomic gas with the formula H_2. Hydrogen gas is colorless, odorless, tasteless, non-toxic and highly flammable. Hydrogen is the most abundant chemical in the world. ...