Chemical Compound

Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

chemical compound

[′kem·i·kəl ′käm‚pau̇nd]

Compound, Chemical


a complex substance consisting of chemically bound atoms of two or more different elements. Certain simple substances can be considered chemical compounds if their molecules consist of atoms linked by a covalent bond, for example, nitrogen (N2) and oxygen (O2). The composition of a chemical compound is expressed through a chemical formula, and the structure is often represented by a structural formula. In the vast majority of cases, chemical compounds obey the law of definite proportions and the law of multiple proportions. However, many compounds of variable composition are known.

Chemical compounds are obtained through chemical reactions. The formation of a chemical compound is accompanied by either liberation of energy (exothermic reaction) or absorption of energy (endothermic reaction). The physical and chemical properties of chemical compounds differ from the properties of the substances from which the compounds are obtained. Chemical compounds are characterized by definite values for density, melting point, boiling point, and other constants. Compounds possessing the same composition but different structures have different properties. Chemical compounds are divided into inorganic and organic compounds. More than 100,000 inorganic compounds and more than 3 million organic compounds are known.


References in periodicals archive ?
Our findings provide the first evidence of how chemical compounds found in body odour can be used to develop effective bait traps to control dengue and chikungunya.
This new approach dramatically improves our sensitivity in identifying the chemical compounds that make up crystalline particles.
Some mineralogists are reluctant to accept amorphous substances as minerals because of the difficulty in determining whether the substance is a true chemical compound or a mixture, and the impossibility of characterizing it completely; some prefer to call such substances "mineraloids." However, some amorphous substances (e.g.
Fatty liver can be caused by certain chemical compounds, nutritional, or endocrine disorders.
The strengthening action of silica in such mixtures originates from a chemical compound between the silica and the polymers.
Request for quotations : feed additive: organic chemical compound methionine, with a basic substance content of at least 98%
Peter Barnes, head of respiratory medicine at London's Imperial College, tested the effectiveness of theobromine, a chemical compound in chocolate, at stopping coughs.
(2001), conducted by the Chemical Compound Safety Research Institute of Japan, Crj:CD (SD) IGS rats were dosed each day with BPA (0, 0.2, 2.0, 20, or 200 [micro]g/kg/day) by stomach tube over two generations.
Synaptic Pharmaceutical Corporation (Paramus, NJ) has patented a process for identifying a chemical compound which specifically binds to a rat or human 5-HT.sub.4 receptor.
Request for quotations : feed additive: organic - chemical compound of lysine with the content of the main substance not less than 98%
VICI Metronics' Dynacal Permeation Tubes are small, inert capsules containing a pure chemical compound in a two-phase equilibrium between its gas phase and its liquid or solid phase.
Organic chemical compound methionine, with a content of the main substance is not less than 98%.

Full browser ?