Periodic Table

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Across
  1. 1. Center of atom
  2. 4. Measurement of matter
  3. 6. The original way the period table was organized
  4. 7. Electrons on the outer shell
  5. 8. Relies solely on valence electrons
  6. 10. The number of protons and neutrons in a atom
  7. 13. Father of the periodic table
  8. 15. The particles look different
  9. 16. Negative Charge
  10. 19. Depicts the Atom as a small positively charged nucleus
  11. 20. form as a result of elements losing or gaining electrons
Down
  1. 2. Pure substance that cannot be broken down
  2. 3. The second way the periodic table was organized
  3. 5. All the particles look the same
  4. 9. composed of two or more compounds physically combined
  5. 11. The basic unit of all matter
  6. 12. The outside part of the atom
  7. 14. No Charge
  8. 17. Positive Charge
  9. 18. A substance made up of two or more elements chemically combined