2. Mercury (Hg) By Noble Carpenter

3. Who discovered Mercury?  Discovered by ancient Chinese, Egyptians, Hindus, and Romans  It was found in the Egyptian tombs  It is named after the the Roman God who was a swift messenger DDiscovered by ancient Chinese, Egyptians, Hindus, and Romans IIt was found in the Egyptian tombs IIt is named after the the Roman God who was a swift messenger

4. Mercury’s Characteristics  It is a a very heavy liquid  Three types of mercury: elemental, inorganic, and organic mercury  All types are toxic  Silver and white  Found at trace levels in many minerals  Greater concentrations in fossil fuels  Three valence states: elemental (Hg0), monovalent-mercurous (Hg1+), and the divalent mercuric (Hg2+)  Slightly water-soluble  Vapors of elemental mercury can occur at room temperature  Inorganic mercury compounds contain ionic mercury usually in a salt formation  It is a a very heavy liquid  Three types of mercury: elemental, inorganic, and organic mercury  All types are toxic  Silver and white  Found at trace levels in many minerals  Greater concentrations in fossil fuels  Three valence states: elemental (Hg0), monovalent-mercurous (Hg1+), and the divalent mercuric (Hg2+)  Slightly water-soluble  Vapors of elemental mercury can occur at room temperature  Inorganic mercury compounds contain ionic mercury usually in a salt formation

5. Sources of the Element Mercury Sources of the Element Mercury  Naturally occurring element normally found in small amounts in rocks, soils, and the oceans  Never breaks down into a less dangerous form  Some natural sources of mercury but humans are responsible for nearly two-thirds of the mercury currently circulating in our environment  Methylmercury [CH3Hg] is the most toxic form  Affects the immune system, alters genetic and enzyme systems, and damages the nervous system (coordination and the senses of touch taste, and sight) NNaturally occurring element normally found in small amounts in rocks, soils, and the oceans NNever breaks down into a less dangerous form SSome natural sources of mercury but humans are responsible for nearly two-thirds of the mercury currently circulating in our environment MMethylmercury [CH3Hg] is the most toxic form AAffects the immune system, alters genetic and enzyme systems, and damages the nervous system (coordination and the senses of touch taste, and sight)

6. Uses of Mercury  Mercury is found in light switches because conducts electricity  Mercury is found in most paints because gives the paint color  Mercury is found in thermometers and when above -38.8 degrees Celsius  It is used in thermometers so that it expands, telling the temperature  Mercury is found in remote batteries and is used to store the energy in the battery  Used in engineering and factories  Mercury is found in light switches because conducts electricity  Mercury is found in most paints because gives the paint color  Mercury is found in thermometers and when above -38.8 degrees Celsius  It is used in thermometers so that it expands, telling the temperature  Mercury is found in remote batteries and is used to store the energy in the battery  Used in engineering and factories

7. Mercury’s Bohr Diagram  It has 80 protons and electrons  It has 121 neutrons  The Atomic Mass of Mercury is 200.59  It has 80 protons and electrons  It has 121 neutrons  The Atomic Mass of Mercury is 200.59

8. Pictures of Mercury Pictures of Mercury Liquid form of Mercury Thermometer with Mercury Things containing Mercury

9. Citation  Bentor, Yinon. “Chemical Element” Mercury. May 30, 2007 http://www.chemicalelements.com/elements/hg.html http://www.chemicalelements.com/elements/hg.html  Calvert, J. B. “Mercury” Physics Today. 5 November 2002.http://www.du.edu/~jcalvert/phys/mercury.htmhttp://www.du.edu/~jcalvert/phys/mercury.htm  Anonymous. “Characteristics of Mercury” University of Minnesota. 1990. http://enhs.umn.edu/hazards/hazardssite/mercury/merccharacter.html http://enhs.umn.edu/hazards/hazardssite/mercury/merccharacter.html  Helmenstine, A.M. “All Info About Chemistry” Los Alamos National Laboratory. 2001. http://chemistry.allinfoabout.com/periodic/hg.html http://chemistry.allinfoabout.com/periodic/hg.html  Bentor, Yinon. “Chemical Element” Mercury. May 30, 2007 http://www.chemicalelements.com/elements/hg.html http://www.chemicalelements.com/elements/hg.html  Calvert, J. B. “Mercury” Physics Today. 5 November 2002.http://www.du.edu/~jcalvert/phys/mercury.htmhttp://www.du.edu/~jcalvert/phys/mercury.htm  Anonymous. “Characteristics of Mercury” University of Minnesota. 1990. http://enhs.umn.edu/hazards/hazardssite/mercury/merccharacter.html http://enhs.umn.edu/hazards/hazardssite/mercury/merccharacter.html  Helmenstine, A.M. “All Info About Chemistry” Los Alamos National Laboratory. 2001. http://chemistry.allinfoabout.com/periodic/hg.html http://chemistry.allinfoabout.com/periodic/hg.html

10. The End