Chemistry Crossword

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