Chemistry

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