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Electrochemistry

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Electrochemistry Powered By Docstoc
					     Electrochemistry

or - how chemistry and electricity
           are related
What makes chemistry happen?

   The electrons in atoms determine
    chemical behavior
   But, not all the electrons
   Valence
Build an oxygen atom
         Oxygen - 16 ( 16O)
Why it is H2O and not H4O
Hydrogen             Hydrogen

            Oxygen
    Electrons form chemical bonds

   Shared electrons make covalent bonds
   Transferred electrons make ionic bonds
   It’s really not either/or - all bonds are more
    or less ionic or covalent
   The bond character depends on how close
    each of the participant atoms is close to a
    full shell - 8 valence electrons
Elegtronegativities of the Elements

                      Key
    Atomic number    6
                             Electronegativ ity

    Element symbol

                     12.01   Average atomic mass
     Element name
     Electroplating copper


                              Paper clip

            Cop per
            wire


9V                                  Steel
                                    washer

                  Cop per sulf ate solution
                  (CuSO4 )
The Reactions

				
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posted:8/14/2012
language:English
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