Periodic Table Notes
                                                                  Periodic Table: An organized list of all 
          How does an atom, molecule, element, and                known elements. Element Key tells you how 
          compound relate to each other?                          to read the Periodic Table.
          Atoms (singular) make up molecules (plural)             Elements are arranged in groups (families) & 
          Elements(singular) make up compounds                    periods.
          (plural)                                                                    G
                                                                                      R
          Atoms are the basic unit of an element                                      O
                                                                                      U
          Molecules are the basic unit of a compound                                    Period
            Group is a column on the periodic table.
            Period is a row on the periodic table.
            Elements are also arranged into metals,               Valence Electrons: Electrons found on the 
            nonmetals, & metalloids.                              outermost energy level. These electrons are 
            Metals: Shiny, solid, durable, hard, conducts         involved in bonding.
            heat & electricity.
            Nonmetal: Opposite of a metal-soft, brittle           EDD-Electron Dot Diagrams: Shows the 
            solids, poor conductors of heat & electricity.        number of valence electrons for an element.
            Metalloids: In-between a metal & a 
            nonmetal. Has some properties of a metal 
            and some of a nonmetal.
   Periodic Table Notes
      How to draw an EDD?
       1. Write the chemical symbol.
       2. Determine how many valence electrons 
      are associated with the element.
       3. Draw a dot for each valence electron 
      around the chemical symbol. Remember to 
      think about a clock:12:00, 3:00, 6:00, 9:00.
       4. To determine how many valence 
      electrons look at the group number. If the 
      number is a 2 digit #, ignore the 1. 
      The maximum # of valence electrons is 8 for 
      any given element.
      Helium is the only exception to the rule.