Chemical Reactions

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Across
  1. 2. change that can be undone
  2. 3. change where no new substance is made
  3. 7. group of atoms joined together
  4. 9. tiny piece of matter
  5. 11. join between atoms
  6. 12. smallest particle of an element
  7. 13. state of matter that can fill a container
  8. 14. starting substance in a reaction
  9. 16. state of matter that flows
  10. 17. liquid turning into gas
Down
  1. 1. change that cannot be undone
  2. 4. reaction of iron with oxygen
  3. 5. state of matter with fixed shape
  4. 6. atoms move to form new substances
  5. 8. change where a new substance is made
  6. 10. substance made in a reaction
  7. 11. reaction that produces heat and light
  8. 14. change where new substances are formed
  9. 15. solid turning into liquid