The Rosen Publishing Group, Inc, 15 aug. 2008 - 48 pagini
Mercury is the only metal that is a liquid at room temperature. Mercury s chemical symbol is Hg. The Hg comes from the Greek word hydrargyrum, which means liquid silver. Because of its silvery appearance and the way it moves, the metal was also called quicksilver. In fact, the chemical is named for the Roman god, Mercury, who was known for his speed and mobility. Students learn about the sources of mercury and its effects on the environment (coal-buring power plants are responsible for nearly 40 percent of the human-caused mercury emissions in the United States). They learn about mercury s chemical properties and classification as a transition metal. Mercury s place on the periodic table and its subatomic particles are also discussed. Readers will study mercury ions and isotopes. The book also explains the element s applications in thermometers, thermostats, silent wall switches, fluorescent lights, and dental amalgams.
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121 neutrons alchemists alcohol alloy amalgam amount of mercury atom’s nucleus Atomic Number atomic weight body Calder called mercuric calomel charged subatomic particle Chemical compounds chemically bonded chloride cinnabar contain mercury contaminated with methylmercury dangerous different number eating fish Elemental Mercury elements are chemically energy level example exposure fluorescent lightbulbs food chain form of mercury fungicide glove isotopes isotopes of mercury Karen Wetterhahn Kristi Lew levels of methylmercury Mendeleyev mercury atoms mercury batteries Mercury Chemical Symbol mercury compounds mercury fountain mercury ion mercury isotope mercury poisoning mercury thermometer mercury vapor mercury-containing mercury(II methylmercury microorganisms naming system neurotoxin nonmetal number of neutrons number of protons ordinary chemical means organic compound oxide HgO oxygen percent periodic table physical properties pink disease positive charge Retrieved October 11 risk of mercury scientists subatomic particle sulfur thermostats Thimerosal tilt switch transition metals trash type of ion U.S. Environmental Protection valence electrons zip-top