Chris Hartzell - Ch. 9 Crossword

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Across
  1. 4. has a negative electrical charge; move around the nucleus.
  2. 5. has no electrical charge; found in the nucleus of an atom.
  3. 6. the number that shows the amount of protons on the Periodic Table of Elements.
  4. 7. the number that shows the amount of protons and neutrons combined on the Periodic Table of Elements.
  5. 9. an atom with a charge that is positive or negative.
  6. 10. a positively charged ion.
Down
  1. 1. an electron in the outermost energy level.
  2. 2. has a positive electrical charge; are a part of the nucleus.
  3. 3. a negatively charged ion.
  4. 8. two atoms with different numbers of neutrons but the same amount of protons.