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Atomic Structure WS 2

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					Atomic Structure WS 2                                        Name _____________________
                                                             Period ______

   1. Draw a picture representing the structure of an atom




   2. What is an atom?

   3. What type of subatomic particle has a negative charge? A positive charge?

   4. What is an isotope?


Complete the following table

         Name                  Symbol        Mass        Protons     Neutrons Electrons
       Sulfur atom
       Calcium-41
                                 Li
                                64
                                 Cu

Finish the table given the following information.

                                     Isotope 1           Isotope 2               Isotope 3
Mass                                     15                 16                      18
Number                                  207                 23                      16
Average Mass
Relative Abundance
Element’s Average Mass


      Isotope’s Average Mass (total mass/# of particles)
      Relative Abundance (# of particles/total # of particles)
      Relative Mass (average mass times relative abundance)
      Element’s Average Mass (sum of relative masses)

				
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