Chemistry Vocab Crossword Puzzle

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Across
  1. 1. What are periods sorted by
  2. 4. Electrons on the outermost ring of elec.
  3. 6. Electrons are equal to _ amu
  4. 8. How to find # of pro. + elec. in atoms
  5. 9. Unit for measuring weight of particles
  6. 10. Subatomic particle with a neutral charge
  7. 15. Table of all chemical elements
  8. 16. The smallest part of an element
  9. 17. The columns on the periodic table are _
  10. 18. A substance that share properties w both
  11. 19. How many elec. are kept in level 3
Down
  1. 2. Which way do families go
  2. 3. Which way do periods go
  3. 5. Something made of one atom type is a
  4. 7. Less valence elec. means more _
  5. 11. Protons and neutrons are equal to _ amu
  6. 12. A dull substance is most likely _
  7. 13. A malleable substance is most likely _
  8. 14. The rows on the periodic tables are _
  9. 15. Subatomic particle with a positive