Cesium By Olivia H., P.10 Cesium Atomic Symbol: Cs State at room - - PowerPoint PPT Presentation

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Cesium By Olivia H., P.10 Cesium Atomic Symbol: Cs State at room - - PowerPoint PPT Presentation

Cesium By Olivia H., P.10 Cesium Atomic Symbol: Cs State at room temperature: solid Atomic Number: 55 Melting point: 301.59 K, 28.44C, Atomic Mass: 132.9 83.19F Family: Alkali Metals Boiling Point: 944 K, 671C, Group Number: One


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SLIDE 1

Cesium

By Olivia H., P.10

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SLIDE 2

Cesium

Atomic Symbol: Cs State at room temperature: solid Atomic Number: 55 Melting point: 301.59 K, 28.44°C, Atomic Mass: 132.9 83.19°F Family: Alkali Metals Boiling Point: 944 K, 671°C, Group Number: One 1240˚F Physical properties: Very soft, silvery-white, ductile metal

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SLIDE 3

Properties

Physical properties: Very soft, silvery-white, ductile metal Chemical Properties: Cesium reacts violently with water, ice, humid air, acids, sulfur, and phosphorus. In order to avoid these reactions, it is stored and transported in kerosene, which it doesn’t react with. Uses: Cesium is used mainly in photoelectric cells, but is also used in military infrared lamps, radio tubes, and video equipment.

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Discovery

Who: Robert Bunsen and Gustav Kirchhoff When: 1860 How: Cesium was one of the first elements discovered by using spectroscopic methods Where: Heidelberg, Germany Origin of name: named “caesium” after the Latin word for “sky blue” (its spectral lines were blue), but is spelled “cesium” in America How it is obtained: Cesium is found mainly in the mineral pollucite. In order to obtain pure cesium, cesium and rubidium ores are crushed and heated with sodium metal to 650°C

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SLIDE 5

Sources

"CESIUM." Cesium, Chemical Element. Advameg, Inc., 2016. Web. 06 Jan. 2016. Jefferson National Accelerator Facility, Thomas. "The Element Cesium." It's Elemental

  • . Office of Science Education, n.d. Web. 06 Jan. 2016.

"Cesium." World of Scientific Discovery. Gale, 2007. Science in Context. Wed. 6 Jan. 2016.

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Cesium Song

Oh Cesium (Tune, Oh Christmas tree) Oh Cesium, oh Cesium, Thy spectrum doth us please-ium. Thy sky-blue lines in plasma's fire, Do dreams of icy lakes inspire. Oh Cesium, oh Cesium, Thy spectrum doth us please-ium. Oh Cesium, oh Cesium, When held, you never freeze-ium. Thy gently smoking silver spheres, When dropped in water, please the ears. Oh Cesium, oh Cesium, When held, you never freeze-ium. Oh Cesium, oh Cesium, You put us at our ease-ium. You tend the seconds of the day, So that our watches never stray Oh Cesium, oh Cesium, You put us at our ease-ium.