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Atomic Structure Review
 

Atomic Structure Review

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    Atomic Structure Review Atomic Structure Review Presentation Transcript

    • Atomic Structure Review
    • Protons
      • Positive Charge
      • 1 atomic mass unit
      • Located in nucleus
      • The number never changes
    • Neutrons
      • No charge
      • 1 atomic mass unit
      • Located in the nucleus
      • The number changes based on atomic mass. A new # of neutrons=isotope.
    • Electrons
      • Have a negative charge
      • No mass
      • Located outside of the nucleus
      • Atoms can gain or lose electrons.
      • Gain electrons, negative charge.
      • Lose electrons, positive charge.
    • Determining Atomic Mass
      • Atomic mass is the number of protons and neutrons together.
      • Electrons do not count, they have no mass.
      • To find the number of neutrons, subtract the atomic number from the atomic mass.
    • Atomic Number
      • Elements are arranged on the periodic table based upon their atomic number.
      • Atomic number tells us the number of protons in an atom.
      • The identity of the atom is based on the protons!!!!
    • Isotopes
      • Know how to find an isotope.
      • Be able to calculate the number of neutrons and protons.
      • Understand that one atom can have several different isotopes.
    • Ions
      • Atoms carrying a charge.
      • New net charge, either positive or negative.
      • Electrons gained=negative
      • Electrons lost=positive
    • Electron Levels
      • S level, fills with 2 electrons
      • P level, fills with 6 electrons
      • D level, fills with 10 electrons
      • Be able to identify an atom based on the electron configuration.
      • If given an element, be able to give its configuration.