Chemistry Crossword

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Across
  1. 1. number of protons
  2. 4. particles dispersed evenly
  3. 6. positively charged ion
  4. 8. flammability,acidity,reactivity
  5. 11. colloids shine
  6. 12. transfer of electrons
  7. 14. close to the accepted value
  8. 15. time it takes to reach half original value
  9. 17. color,shape,luster
  10. 18. heat absorbed
  11. 19. close to each other
  12. 20. 6.02x10^23
Down
  1. 2. sharing of electrons
  2. 3. negatively charged ion
  3. 5. heat released
  4. 7. solid produced during reaction
  5. 9. mass in amu
  6. 10. total energy
  7. 13. solid to gas
  8. 16. particles settle out