Search
Search results
Displaying 11 - 20
intoxication
(Encyclopedia) intoxication, condition of body tissue affected by a poisonous substance. Poisonous materials, or toxins, are to be found in heavy metals such as lead and mercury, in drugs, in…phosgene
(Encyclopedia) phosgenephosgenefŏsˈjēn [key], colorless poison gas, first used during World War I by the Germans (1915). When dispersed in air, the gas has the odor of new-mowed hay. The gas is…II. Ozone Depletion
For over 50 years, chlorofluorocarbons, or CFCs, were thought of as miracle substances. They are stable, nonflammable, low in toxicity, and inexpensive to produce. Over time, CFCs found uses…osmium
(Encyclopedia) osmiumosmiumŏzˈmēəm [key], metallic chemical element; symbol Os; at. no. 76; at. wt. 190.23; m.p. 3,045±30℃; b.p. 5,027±100℃; sp. gr. 22.57 at 20℃; valence usually +0 to +8. Osmium is…methane
(Encyclopedia) methanemethanemĕthˈān [key], CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184℃, and boils at −161.4℃. It is…Montreal Protocol
(Encyclopedia) Montreal Protocol, officially the Protocol on Substances That Deplete the Ozone Layer, treaty signed on Sept. 16, 1987, at Montreal by 25 nations; 197 nations are now parties to the…germanium
(Encyclopedia) germaniumgermaniumjərmāˈnēəm [key] [from Germany], semimetallic chemical element; symbol Ge; at. no. 32; at. wt. 72.63; m.p. 937.4℃; b.p. 2,830℃; sp. gr. 5.323 at 25℃; valence +2 or +4…Chemistry: Drawing Lewis Structures
Drawing Lewis StructuresChemistryBonding and Structure in Covalent CompoundsCovalent Compounds Get MysteriousThe Mystery and Wonder of Hybrid OrbitalsDrawing Lewis StructuresResonance…hepatitis
(Encyclopedia) hepatitishepatitishĕpˌətīˈtĭs [key], inflammation of the liver. There are many types of hepatitis. Causes include viruses, toxic chemicals, alcohol consumption, parasites and bacteria…halogen
(Encyclopedia) halogenhalogenhălˈəjĕn [key] [Gr.,=salt-bearing], any of the chemically active elements found in Group 17 of the periodic table; the name applies especially to fluorine (symbol F),…Trending
Here are the facts and trivia that people are buzzing about.
