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Chemistry Worksheet Ch. 3 Name:__________ Find someone in the class to swap with….You give them an answer and they give one to you. (Use each classmate only once. ) Have them initial your answer after you write it down. 1. What is an ion? ____________________________________________________ _________________________________________________________________ ______ 2. What are isotopes?__________________________________________________ _________________________________________________________________ ______ 3. Describe the Plum Pudding Model of the Atom.___________________________ _______________________________________________________________________ _________________________________________________________________ ______ 4. What did Rutherford conclude from the fact that most alpha particles went straight through the gold foil?________________________________________________ _________________________________________________________________ ______ 5. Explain which parts of an atom determine the mass and why._________________ ________________________________________________________________________ _________________________________________________________________ ______ 6. What is the nucleus of an atom and include its properties.____________________ ________________________________________________________________________ _________________________________________________________________ ______ 7. What does the atomic number represent and why is it important?______________ ________________________________________________________________________ _________________________________________________________________ ______
