Chemistry

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Across
  1. 2. atomic number
  2. 4. metals
  3. 6. anion
  4. 10. neutrons
  5. 12. protons
  6. 14. nonmetals
  7. 17. periodic table
  8. 18. alkali metals
  9. 19. mixture
  10. 20. hydrogen
Down
  1. 1. states of matter
  2. 3. oxidation
  3. 5. structure
  4. 7. plasma
  5. 8. atoms
  6. 9. sublimation
  7. 11. monoatomic
  8. 13. chemical
  9. 15. liquid
  10. 16. electronegativity