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formula, in chemistry

(Encyclopedia)formula, in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions....

ash, in chemistry

(Encyclopedia)ash, in chemistry, solid residue of combustion. The chemical composition of an ash depends on that of the substance burned. Wood ash contains metal carbonates (e.g., potassium carbonate) and oxides fo...

suspension, in chemistry

(Encyclopedia)suspension, in chemistry, mixture of two substances, one of which is finely divided and dispersed in the other. Common suspensions include sand in water, fine soot or dust in air, and droplets of oil ...

valence, in chemistry

(Encyclopedia)valence, combining capacity of an atom expressed as the number of single bonds the atom can form or the number of electrons an element gives up or accepts when reacting to form a compound. Atoms are c...

sol, in chemistry

(Encyclopedia)sol, in chemistry: see colloid.

resonance, in chemistry

(Encyclopedia)resonance, in chemistry: see chemical bond. ...

International Criminal Court

(Encyclopedia)International Criminal Court (ICC), first permanent world court created specifically to try individuals for genocide, war crimes, crimes of aggression, and crimes against humanity, est. 2002; located ...

international monetary system

(Encyclopedia)international monetary system, rules and procedures by which different national currencies are exchanged for each other in world trade. Such a system is necessary to define a common standard of value ...

oganesson

(Encyclopedia)oganesson ōˈgənĕsˌən [key], artificially produced radioactive chemical element; symbol Og; at. no. 118; mass number of most stable isotope 294; m.p., b.p., sp. gr., and valence unknown. Situated...

Acadia University

(Encyclopedia)Acadia University, at Wolfville, N.S., Canada; founded 1838; became Acadia Univ. 1891. It has faculties of arts, pure and applied sciences, management and education, and theology. Acadia Divinity Coll...