2009families

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2009families

  1. 2. <ul><li>Notes: Families </li></ul><ul><li>H: Review notes </li></ul>
  2. 3. Families January 14, 2009
  3. 4. Objectives <ul><li>Identify the number of valance electrons in an atom </li></ul><ul><li>Explain why elements in a family have similar characteristics </li></ul><ul><li>Describe general properties of the families </li></ul>
  4. 6. Alkali Metals Soft, silvery colored metals Very reactive!!! They react violently with water and oxygen so they need to be stored in oil. http://www.lyon.edu/webdata/Users/DMcDowell/GenChem/alkalishow.html
  5. 7. Alkali Metals reacting with water: http://www.youtube.com/watch?v=QSZ-3wScePM&feature=related
  6. 8. Alkaline Earth Metals Silvery-White Metals Fairly reactive Many are found in rocks in the earth’s crust
  7. 9. Transition Metals Malleable Ductile Most are good conductors of electricity
  8. 10. Lanthanide Series Actinide Series Shiny, reactive metals radioactive
  9. 11. BORON FAMILY <ul><li>Group 3 </li></ul><ul><li>3 valence electrons </li></ul><ul><li>Most are metals </li></ul>
  10. 12. CARBON FAMILY <ul><li>Group 4 </li></ul><ul><li>4 valence electrons </li></ul><ul><li>Contains metals, metalloids, and a non-metal Carbon (C) </li></ul>
  11. 13. NITROGEN FAMILY <ul><li>Group 5 </li></ul><ul><li>5 valence electrons </li></ul><ul><li>Can share electrons to form compounds </li></ul><ul><li>Contains metals, metalloids, and non-metals </li></ul>
  12. 14. OXYGEN FAMILY <ul><li>Group 6 </li></ul><ul><li>6 valence electrons </li></ul><ul><li>Contains metals, metalloids, and non-metals </li></ul><ul><li>Reactive </li></ul>
  13. 15. Most are poisonous Fairly reactive Poor conductors of electricity Usually form salts Halogens
  14. 16. Unreactive Gases at room temperature Noble Gases

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