Chemistry Crossword

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Across
  1. 2. The most stable and unreactive elements.
  2. 5. Translates into "the chemist"
  3. 9. Releases heat
  4. 10. A metal and non-metal
  5. 11. When 2 or more substances combine to form a new substance
  6. 13. J.J Thomson's model
  7. 16. Negatively charged particles
  8. 17. A change that is irreversible
  9. 18. Slow reaction requiring oxygen
  10. 20. A non-metal and non-metal
  11. 23. NaCl
  12. 24. A change that is reversible
  13. 25. Organic Catalyst
Down
  1. 1. Absorbs heat
  2. 3. Neutrally charged particles
  3. 4. Below the element's name
  4. 6. The number on the top left
  5. 7. Located in the center of the atom
  6. 8. John Dalton's model
  7. 12. Rows in the periodic table
  8. 14. An atom that has become electrically charged
  9. 15. C02
  10. 19. Columns in the periodic table
  11. 21. Fast reaction requiring oxygen
  12. 22. A table of elements
  13. 24. Positively charged particles