10/11/11

Post date: Oct 17, 2011 4:31:47 PM

• • Bell Ringer (written): why is the periodic table arranged the way it is?

  • Reading from "The Disappearing Spoon"

  • Shortened Bohr models

    • Instead of drawing protons and neutrons, just write the element's symbol

    • Draw electrons in layers around the element's symbol

  • Periodic table electron activity

    • Divide up first 12 elements, draw shortened Bohr models of each

    • Arrange drawings as they appear in the periodic table

    • Patterns:

      • All elements in 1st row have 1 layer of electrons, 2nd row have 2 layers of electrons, etc.

      • All elements in 1st column have 1 electron in outer later, 2nd column have 2 electrons in outer layer, etc.