Chemical Reactions

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Across
  1. 1. the number in front of a chemical formula that tells how many molecules are present
  2. 2. two or more elements chemically combined in a set ratio
  3. 4. a substance that slows down a chemical reaction
  4. 7. a substance that enters into a chemical reaction
  5. 11. energy that is stored and ready to be used
  6. 12. a substance that speeds up a chemical reaction
  7. 13. two or more atoms chemically combined
  8. 14. a solid formed from a solution in a chemical reaction
  9. 15. a pure substance that cannot be broken down
  10. 16. energy of motion
  11. 17. a reaction in which substances break down
Down
  1. 1. the amount of one material in a given volume of another material
  2. 3. a reaction in which substances are combined
  3. 5. a substance formed as a result of a chemical reaction
  4. 6. the minimum energy required to start a chemical reaction
  5. 8. the smallest particle of matter
  6. 9. the number you can NOT change when balancing chemical equations
  7. 10. a reaction in which substances trade places