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1 copper penny 3 - PowerPoint PPT Presentation

Chapter 3

Chapter 3. Atoms. Ions. Ions. If an ion has a charge of -2, what has happened to the atom?. The atom has gained two electrons. If an ion has a charge of +2, what has happened to the atom?. The atom has lost two electrons. Isotopes. Isotopes. Count the neutrons and protons. Proton.

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1 copper penny 3 - PowerPoint PPT Presentation

Chapter 3