Josie Blanchard Chapter 9

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Across
  1. 2. equal to the number of protons
  2. 4. any of the possible energies an electron may have in an atom
  3. 6. equal to the number of protons plus neutrons
  4. 7. particle that has no electrical charge
  5. 8. an ion that has 1 more electron than proton (negative charge)
  6. 9. two atoms with different numbers of neutrons
Down
  1. 1. an electron in the outermost energy level of an atom
  2. 3. particle that has a positive charge
  3. 4. particle that has a negative charge
  4. 5. an atom that carries an electrical charge