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-burning 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.
Ce spun oamenii - Scrieți o recenzie
Nu am găsit nicio recenzie în locurile obișnuite.
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 Environmental Protection Agency exposure fluorescent lightbulbs form of mercury fungicide glove inside isotopes isotopes of mercury Karen Wetterhahn levels of methylmercury Mendeleyev mercury atoms mercury batteries mercury chemical mercury compounds mercury fountain mercury ion mercury isotope mercury poisoning mercury vapor mercury(II methylmercury microorganisms naming system neurotoxin number of neutrons number of protons ordinary chemical means organic compound oxide HgO oxygen periodic table physical properties pink disease positive charge Retrieved October 11 risk of mercury scientists subatomic particle sulfur Table of Elements temperature scale thermostats Thimerosal tilt switch transition metals trash type of ion U.S. Environmental Protection valence electrons zip-top