Chemical reactions

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Across
  1. 3. A substance that takes part in and undergoes change during a reaction
  2. 5. thing, especially a trend or fact, that indicates the state or level of something
  3. 8. the state or process of rotting decay
  4. 10. combination or composition, in particular
  5. 11. A substance that increases the rate of a chemical reaction
Down
  1. 1. Reactions process that involves rearrangement of the molecular or ionic structure of a substance
  2. 2. A chemical substance that neutralizes alkalis
  3. 4. Of Mass a principle stating that mass cannot be created or destroyed
  4. 6. the branch of science that deals with the identification of the substances
  5. 7. cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely
  6. 9. An article or substance that is manufactured or refined for sale