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Halogens: Iodine

Halogens: Iodine. Name Origin- Taken from the work ioeides which means “violet colored”. Number of protons: 53 Number of electrons: 53. Discovered by chance (in nature) by Bernard Courtois in 1811. . Sam Sepulveda 5-13. Halogens: Iodine. Common uses:

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Halogens: Iodine

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  1. Halogens: Iodine • Name Origin- Taken from the work ioeideswhich means “violet colored” • Number of protons: 53 • Number of electrons: 53 • Discovered by chance (in nature) by Bernard Courtois in 1811. Sam Sepulveda 5-13

  2. Halogens: Iodine • Common uses: • Silver-Iodine is used to make film used in • x-ray cameras • Scientists use silver-iodine to “seed” clouds • to make it rain where it normally would not • Tungsten-iodine is used to make filaments • in electronic light bulbs • Iodine is found in the thyroid gland of the • throat Sam Sepulveda 5-13

  3. Halogens: Iodine • Facts: • In nature every iodine atom has 74 neutrons • Iodine has about 14 artificial isotopes • Each year, around 18,000 tons of iodine is • Produced world wide • Common sources of iodine are nuts(almonds),shellfish(shrimp), and fruits(cucumbers) Sam Sepulveda 5-13

  4. Halogens: Chlorine • Origin: The element received its name because of it’s color (chlor is a Greek word meaning “yellow-green”) • Number of protons: 17 • Number of electrons: 17 • Discovered (man-made) by: Carl Wilhelm Scheele in 1774 Selena Thompson 5-14

  5. Halogens: Chlorine • Where is Chlorine found? In oceans, salt lakes, huge amounts are found in the ground as halite or rock salt, also found in the human body. • Common uses of Chlorine: Sterilize drinking water and to disinfect swimming pools • Facts • Melting point: -150.7 F (-101.5 C) • Boiling point: -29.27 F (-34.04 C) Selena Thompson 5-14

  6. Halogens: Chlorine • Pictures: Selena Thompson 5-14

  7. Halogens • Chemical Properties in Common: • Combine readily with other atoms, especially • metals • Atoms need to gain one electron to have a • complete outer shell • Very poor conductors • Never in uncombined form in nature • All Physical Properties are very different Sam Sepulveda 5-13 and Selena Thompson 5-14

  8. Halogens • Books Used : • The Elements, Iodine by Leon Gray • The Elements, Chlorine by Susan Watt • Pictures: • http://www.physchem.co.za/data/periodic_table.htm • http://images-of-elements.com/iodine.php • http://www.bigoven.com/glossary/cucumber • http://www.cancer.gov/cancertopics/pdq/treatment/thyroid/Patient/page1 • http://whatscookingamerica.net/ShrimpTips.htm • http://shop.hempspread.com/Almonds-10oz-Almonds.htm • http://www.chemicalelements.com/elements/cl.html • http://www.familyleisure.com/Discount-Pool-Supplies/3in-Chlorine-Tablet--4lb • http://www.greener-industry.org.uk/pages/chlorine/1_chlorine_AP.htm

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