Chemistry unit 1- Atoms and Elements

Chemistry unit 1- Atoms and Elements

1. Atoms

   • Electrons- Negative
     • Occupy shells around the Nucleus
     • Added/Removed
       • Charged Ion
   • The Nucleus
     • Neutrons- Neutral ( No charge)
     • Protons- Positive
       • Overall charge= Positive
       • # Protons determines what type of atom
   • No charge overall
     • # Protons = # Electrons
   • Substance with only one type of atom = Element

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