chem crossword

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Across
  1. 3. substances that undergo chemical change
  2. 4. Symbolic representation of a chemical reaction
  3. 6. A reaction where two or more reactants combine to form a single product
  4. 9. A reaction in which one element replaces another in a compound
  5. 10. The type of reaction in which one compound breaks down into simpler substances
Down
  1. 1. The reddish-brown coating formed on iron
  2. 2. A reaction in which an insoluble substance forms as a product
  3. 5. A reaction in which heat is released
  4. 7. A reaction in which heat is absorbed
  5. 8. The type of reaction where an acid and a base neutralize each other to form salt and water