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surface chemistry

(Encyclopedia)surface chemistry, study of chemical reactions in which the reactants are first adsorbed onto a surface medium (see adsorption) that then acts as a catalyst for the reaction; after the reaction the pr...

radiation chemistry

(Encyclopedia)radiation chemistry: see radiochemistry. ...

Costa del Sol

(Encyclopedia)Costa del Sol kōˈstä ᵺĕl sōlˈ [key], a strip of coastline, S. Spain, in Andalusia, extending from Motril to Estepona The area has become famous as a Mediterranean coastal resort, and its touri...

Calderón Sol, Armando

(Encyclopedia)Calderón Sol, Armando, 1948–2017, Salvadoran political leader, , b. San Salvador, J.D. Univ. of El Salvador, 1977. A member of the right-wing National Republican Alliance, he held several positions...

tonic sol-fa

(Encyclopedia)tonic sol-fa: see musical notation. ...

Sol, in Roman religion

(Encyclopedia)Sol sŏl [key], in Roman religion, sun god. An ancient god of Mesopotamian origin, he was introduced (c.220) into Roman religion as Sol Invictus by emperor Heliogabalus. His worship remained an import...

earth, in chemistry

(Encyclopedia)earth, in chemistry, metallic oxide not readily reducible by chemical means, e.g., alkaline earths, rare earths, and alumina. The name is also applied to certain absorbent clays, e.g., fuller's earth,...

dispersion, in chemistry

(Encyclopedia)dispersion, in chemistry, mixture in which fine particles of one substance are scattered throughout another substance. A dispersion is classed as a suspension, colloid, or solution. Generally, the par...

ether, in chemistry

(Encyclopedia)CE5 Ethers ether, any of a number of organic compounds whose molecules contain two hydrocarbon groups joined by single bonds to an oxygen atom. The most common of these compounds is ethyl ether, C...

emanation, in chemistry

(Encyclopedia)emanation: see radon.