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International Union of Pure and Applied Chemistry

(Encyclopedia)International Union of Pure and Applied Chemistry (IUPAC), an international organization est. 1919 to advance the chemical sciences and contribute to the application of chemistry to the service of hum...

International Telecommunication Union

(Encyclopedia)International Telecommunication Union (ITU), specialized agency of the United Nations, with headquarters at Geneva. It was created in 1934 as a result of the merging of the International Telegraph Uni...

Service Employees International Union

(Encyclopedia)Service Employees International Union (SEIU), labor union representing U.S. and Canadian workers in health care (doctors, nurses, health technicians), public services (government workers, school emplo...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

IUPAC

(Encyclopedia)IUPAC: see International Union of Pure and Applied Chemistry. ...

International Ladies Garment Workers Union

(Encyclopedia)International Ladies Garment Workers Union (ILGWU), former U.S. labor union, formed in 1900 by the amalgamation of seven local unions. At the turn of the century most of the workers in the garment ind...

precipitation, in chemistry

(Encyclopedia)precipitation, in chemistry, a process in which a solid is separated from a suspension, sol, or solution. In a suspension such as sand in water the solid spontaneously precipitates (settles out) on st...

Pure Land Buddhism

(Encyclopedia)Pure Land Buddhism or Amidism, devotional sect of Mahayana Buddhism in China and Japan, centering on worship of the Buddha Amitabha. According to the Pure Land Sutras, composed in India in the 2d cent...

inorganic chemistry

(Encyclopedia)inorganic chemistry, the study of all the elements and their compounds with the exception of carbon and its compounds, which fall under the category of organic chemistry. Inorganic chemistry investiga...

physical chemistry

(Encyclopedia)physical chemistry, branch of science that combines the principles and methods of physics and chemistry. It provides a fundamental theoretical and experimental basis for all of chemistry, including or...