Chemical Reaction

Edit Answers
123456789101112131415161718
Across
  1. 3. Type of reaction AB+CD---AC+BD (2word)
  2. 5. 92 of these are found in nature
  3. 7. Evidence of a reaction bubbles
  4. 9. Element symbols used to represent a compound
  5. 12. representation of a chemical reaction
  6. 13. Evidence of reaction with heat
  7. 16. Chemical __________
  8. 17. Substance formed as a result of a reaction
  9. 18. Two or more elements combined
Down
  1. 1. Number in front of a molecule or compound
  2. 2. speeds up a chemical reaction
  3. 4. Type of reaction where a compound is broken down
  4. 6. Type of reaction where elements replace each other
  5. 8. Type of reaction A+B---AB
  6. 10. Substance undergoing change in a reaction
  7. 11. The lower 2 in the molecule CO2
  8. 14. basic unit of a formula
  9. 15. Evidence of reaction liquid turns orange