Chemical Reactions

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Across
  1. 2. a molecule that contains a pair of atoms
  2. 4. ice to water
  3. 5. pure substance made of a singular atoms
  4. 9. a strong smell from gas
  5. 10. long line of molecules made by simple repetitive units
  6. 11. similar to a particle but cant be destroyed or broken
  7. 12. chemical which speeds up the chemical reaction
  8. 13. a molecule that contains 2 or more same atoms
  9. 16. a substance that can make a chemical reaction happen faster
  10. 19. when substances move they have to touch eachother
  11. 21. the damage caused to something by the enviroment
  12. 22. molecule that contains 2 or more different atoms bonded together
  13. 24. 1 atom
  14. 25. two objects stay together
  15. 26. two atoms formed togethre become a...
  16. 28. to transform into a gas
Down
  1. 1. 3 dimensional arrangement in particles
  2. 3. same outcome as chemical change
  3. 4. group of two or more atoms paired together
  4. 6. vertical columns in a periodic table
  5. 7. On the left side of an arrow
  6. 8. Water does this when it has hit 100 degrees celsius
  7. 14. how many substances are in a volume
  8. 15. Part of the 3 states of matter solid, liquid and ....
  9. 17. Ice to dry ice
  10. 18. Write side of a chemical equations
  11. 20. easily changed due to normal room temperatures
  12. 23. when water vapour turns to water
  13. 27. the horizontal rows of periodic table
  14. 29. table- elements put into a table by their chemical properties