Chemistry

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Across
  1. 2. (Substance that speeds up a reaction without being consumed)
  2. 4. (Reaction where a compound breaks down into simpler substances)
  3. 6. (Process of coating iron with zinc to prevent rusting)
  4. 8. (Chemical reaction where energy is absorbed)
  5. 9. (Loss of electrons in a reaction)
  6. 10. (Reaction where one element replaces another)
  7. 13. (Reaction where two or more substances combine to form a single product)
  8. 15. / COMBUSTION (Reaction involving oxygen — Note: Combustion or Oxidation fits here; "Oxidation" pairs excellently with Down #2's theme)
Down
  1. 1. (A reaction that produces heat)
  2. 3. (Gain of electrons in a reaction)
  3. 5. (Substance formed after a chemical reaction)
  4. 7. (Reaction between an acid and a base)
  5. 11. (Balanced representation of a chemical reaction)
  6. 12. (Substance that undergoes change in a reaction)
  7. 14. (Substance that slows down a reaction)