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Porter, George, Baron Porter of Luddenham
(Encyclopedia) Porter, George, Baron Porter of Luddenham, 1920–2002, British chemist, b. Stainforth, England, grad. Leeds Univ., Ph.D. Cambridge, 1949. After serving as a radar officer during World…Scheele, Karl Wilhelm
(Encyclopedia) Scheele, Karl WilhelmScheele, Karl Wilhelmkärl vĭlˈhĕlm shāˈlə [key], 1742–86, Swedish chemist, b. Stralsund. He is known as the discoverer of many chemical substances. He was a…ionic bond
(Encyclopedia) ionic bond: see chemical bond.electrovalent bond
(Encyclopedia) electrovalent bond: see chemical bond.Wayland
(Encyclopedia) Wayland, town (1990 pop. 11,874), Middlesex co., E Mass., W of Boston; settled c.1638, inc. 1835. Electronic and chemical research is carried on there.reaction rate
(Encyclopedia) reaction rate: see chemical reaction.Tm
(Encyclopedia) Tm, chemical symbol for the element thulium.resonance, in chemistry
(Encyclopedia) resonance, in chemistry: see chemical bond.Le Châtelier's principle
(Encyclopedia) Le Châtelier's principle, chemical principle that states that if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, and…stannic
(Encyclopedia) stannic: a chemical compound containing tin in the +4 valence state.Trending
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