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Mercury is the only metal that is a liquid at room temperature. Mercurys 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 mercurys chemical properties and classification as a transition metal. Mercurys place on the periodic table and its subatomic particles are also discussed. Readers will study mercury ions and isotopes. The book also explains the elements applications in thermometers, thermostats, silent wall switches, fluorescent lights, and dental amalgams.
You've heard that dreamlike voice calling to you: a yearning to work with the earth's life energies...a heartfelt desire to become a student of the Craft. Now is the time to call forth your passion and strength of will, and commit yourself fully to the Path of the Wise. Dedicant: A Witch's Circle of Fire invites you to set forth on the sacred journey to becoming a Witch. Designed to harmonize with the Wheel of the Year, the monthly lessons feature seasonally themed stories, meditations, Witchcraft lore, ethics questions, spells, and pathworking rituals. The course on Wicca culminates in a powerful self-initiation rite that brings you to the level of Initiate. Blending purposeful study with r...
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In its 114th year, Billboard remains the world's premier weekly music publication and a diverse digital, events, brand, content and data licensing platform. Billboard publishes the most trusted charts and offers unrivaled reporting about the latest music, video, gaming, media, digital and mobile entertainment issues and trends.