|
|
Chemistry | Definition, Topics, Types, History, & Facts | Britannica
Cooking, fermentation, glass making, and metallurgy are all chemical processes that date from the beginnings of civilization. Today, vinyl, Teflon, liquid crystals, semiconductors, and superconductors represent the fruits of chemical technology.
Chemical reaction | Definition, Equations, Examples, & Types - Britannica
Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Chemical synthesis | Organic & Inorganic Reactions | Britannica
Chemical compounds are made up of atoms of different elements, joined together by chemical bonds. A chemical synthesis usually involves the breaking of existing bonds and the formation of new ones.
Carbohydrate Chemistry, & Biomolecules - Britannica
A polysaccharide is the form in which most natural carbohydrates occur. Polysaccharides may have a molecular structure that is either branched or linear. Linear compounds such as cellulose often pack together to form a rigid structure; branched forms (e.g., gum arabic) generally are soluble in water and make pastes.
Chemical Weapons Convention (CWC) | Britannica
Chemical Weapons Convention (CWC), international treaty that bans the use of chemical weapons in war and prohibits all development, production, acquisition, stockpiling, or transfer of such weapons.
Chemical Banking Corporation | Merger, Acquisition, Rebranding ...
The merged company became the Chemical Banking Corporation. In 1996 the firm, which was by then the second-largest bank in the United States, merged with another New York bank, The Chase Manhattan Corporation, to form what became the largest bank in the nation.
Gold | Facts, Properties, & Uses | Britannica
gold (Au), chemical element, a dense lustrous yellow precious metal of Group 11 (Ib), Period 6, of the periodic table of the elements. Gold has several qualities that have made it exceptionally valuable throughout history.
Chemical Products Portal | Britannica
Chemical Products Although nature provides us with a staggering amount of natural resources, humankind has also made use of a great variety of man-made compounds and substances.
Nitric oxide | Uses, Facts, & Definition | Britannica
Nitric oxide, colourless toxic gas that has important chemical signaling functions in animals and is a serious air pollutant.
Covalent bond | Definition, Properties, Examples, & Facts | Britannica
For full treatment, see chemical bonding: Covalent bonds. Molecules that have covalent linkages include the inorganic substances hydrogen, nitrogen, chlorine, water, and ammonia (H 2, N 2, Cl 2, H 2 O, NH 3) together with all organic compounds.
|
.jpg)
FIRE101 Fire Jobs 