Signs of Chemical Reactions

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Across
  1. 3. Lightest state of matter
  2. 5. Moisture ex) H2O
  3. 9. Smell
  4. 11. Type of reaction releasing heat
  5. 12. the starting materials in a reaction
  6. 14. emission of light by a substance not due to heating
  7. 15. pocket of gas in a solid/liquid
  8. 16. Cannot be reversed
  9. 17. which one substance or molecule is reduced and another oxidised
Down
  1. 1. a substance that is present at the end of a chemical reaction
  2. 2. Increase in temperature
  3. 4. Decrease in temperature
  4. 6. Can be reversed
  5. 7. Degree/Intensity of heat
  6. 8. Shade
  7. 10. Forms in which matter can exist
  8. 13. Type of reaction absorbing heat