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Smoke is a suspension of airborne particulates and gases emitted when a material undergoes combustion or pyrolysis, together with the quantity of air that...

In petrochemistry, petroleum geology and organic chemistry, cracking is the process whereby complex organic molecules such as kerogens or long-chain hydrocarbons...

The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons...

In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of photons by...

Nitrosyl fluoride (NOF) is a covalently bonded nitrosyl compound. The compound is a colorless gas, with bent molecular shape. The VSEPR model explains...

An evaporating dish is a piece of laboratory glassware used for the evaporation of solutions and supernatant liquids, and sometimes to their melting point...

Phorbol is a natural, plant-derived organic compound. It is a member of the tigliane family of diterpenes. Phorbol was first isolated in 1934 as the hydrolysis...

A heteronuclear molecule is a molecule composed of atoms of more than one chemical element. For example, a molecule of water (H2O) is heteronuclear because...

Spectral signature is the variation of reflectance or emittance of a material with respect to wavelengths (i.e., reflectance/emittance as a function of...

In chemical kinetics, an Arrhenius plot displays the logarithm of a reaction rate constant, ( ln ⁡ ( k ) {\displaystyle \ln(k)} , ordinate axis) plotted...

In chemistry, the electrochemical equivalent (Eq or Z) of a chemical element is the mass of that element (in grams) transported by a specific quantity...

In materials science, the sessile drop technique is a method used for the characterization of solid surface energies, and in some cases, aspects of liquid...

A monocrystalline whisker is a filament of material that is structured as a single, defect-free crystal. Some typical whisker materials are graphite, alumina...

Osman Achmatowicz (April 16, 1899 – December 4, 1988) was a Polish chemist of Lipka Tatar descent, who studied alkaloid natural products. His son, Osman...

Anprolene is a registered trade name for ethylene oxide that belongs to Andersen Sterilizers. Harold Willids Andersen invented Anprolene in 1967 and used...

An aluminide is a compound that has aluminium with other elements. Since aluminium is near the nonmetals on the periodic table, it can bond with metals...

A helium ionization detector (HID) is a type of detector used in gas chromatography. An HID connected to a gas chromatograph (GC) has the great advantage...

In the pre-modern chemistry of Paracelsus, a clyssus, or clissus, was one of the effects, or productions of that art; consisting of the most efficacious...

Xenoy is a blend of plastics with many industrially-useful properties. It is typically polyester (polybutylene terephthalate, PBT, or polyethylene terephthalate...

PolyAPTAC, or poly (acrylamido-N-propyltrimethylammonium chloride), is an organic polymer. It is water-soluble, forms gels when cross linked, and acts...