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Atomic Structure Worksheet Chemistry Ms. Cole Purpose: To understand how the number of protons, neutrons and electrons determine the properties of atoms Procedure: Obtain a baggie from your instructor Baggies contain the following: White bead represents a proton Purple bead represents a neutron Blue bead represents an electron Count the number of protons, neutrons and electrons and fill out the data table below: Results Bag # # of protons # of neutrons # of electrons Atomic # Mass # Charge Symbol 1 2 3 4 5 6 7 8 9 10 11 12 Conclusions: 1. What are the three main subatomic particles? 2. What is the relationship between protons and atomic number? 3. What is the relationship between protons and neutrons and the mass number? 4. How could you determine the number of neutrons in a carbon-14 atom? How many are there? 5. What is the definition of an isotope? Which of your bags were isotopes? Name