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quicksilver |
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quicksilver: see mercury mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842°C;; b.p. 356.58°C;; sp. gr. 13.
..... Click the link for more information. . mercuryor quicksilverMetallic chemical element, chemical symbol Hg, atomic number 80. Mercury is the only elemental metal that is liquid at ordinary temperatures, with a freezing point of −38 °F (−39 °C) and a boiling point of 674 °F (356.9 °C). Silvery white, dense, toxic (see mercury poisoning), and a good conductor of electricity, mercury is occasionally found free in nature but usually occurs as the red sulfide ore, cinnabar (HgS). It has many uses—in dental and industrial amalgams, as a catalyst, in electrical and measuring apparatus and instruments (e.g., thermometers), as the cathode in electrolytic cells, in mercury-vapour lamps, and as a coolant and neutron absorber in nuclear power plants. Many of mercury's compounds, in which it has valence 1 or 2, are pigments, pesticides, and medicinals. It is a dangerous pollutant because it concentrates in animal tissues in increasing amounts up the food chain. QuickSilver (1) (QuickSilver Technology, Inc., San Jose, CA, www.qstech.com) A mobile communications company that specializes in a reconfigurable logic chip for cellphones and PDAs. See adaptive computing.(2) A browser plug-in from Micrografx that allows a variety of vector drawings to be viewed from the Web. (3) A family of dBASE III PLUS compilers developed by WordTech Systems, Inc. In 1992, the technology was acquired by Borland. quicksilver [′kwik‚silĀ·vər] (chemistry)
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