Chemistry

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Across
  1. 2. abbreviation of element
  2. 8. outermost electron in shell
  3. 11. what's reacted upon
  4. 12. coating
  5. 16. smallest particle in a chemical element
  6. 17. column on the P.T
  7. 20. created periodic table
  8. 23. mass of an atomic particle
  9. 24. two or more elements combined
  10. 25. the result of a chemical reaction
  11. 26. energy given off
Down
  1. 1. smallest part of a substance
  2. 3. energy cannot be created or destroyed
  3. 4. mixture of metal and nonmetal
  4. 5. neutral charge
  5. 6. negative charge
  6. 7. one ring in a shell
  7. 9. odorless colorless low chemical reactivity
  8. 10. a substance that cannot be broken down
  9. 13. number of electrons
  10. 14. energy absorbed
  11. 15. center of atom
  12. 18. positively charged
  13. 19. rows on the P.T
  14. 21. hard, shiny, opaque, conductive
  15. 22. not conductive, brittle