Unit 6: Atomic Structure

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Across
  1. 3. Columns on the Periodic Table
  2. 5. Center of an atom
  3. 7. Identifying number of an element
  4. 10. Electrons on outermost shell
  5. 11. Protons plus neutrons
Down
  1. 1. Subatomic particle with positive charge
  2. 2. Subatomic particle with negative charge
  3. 4. Also known as a shell... holds electrons
  4. 6. Subatomic particle with neutral charge
  5. 8. Rows on the Perodic Table
  6. 9. Smallest unit of matter