Periodic Table

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Across
  1. 1. organization of elements
  2. 5. when atoms stick together sharing electrons
  3. 6. pure substance that can be broke down to an atom
  4. 7. 1 or 2 letters representing an element
  5. 9. smallest particle a substance can be broken into
  6. 10. particle with zero charge in the nucleus
Down
  1. 2. tiny negatively charged particle of an atom
  2. 3. an average mass of an atom of an element
  3. 4. the number of protons an atom has
  4. 8. positively charged particle in the nucleus