chemical reactions

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Across
  1. 3. there must be the same number of each type of atom before and after the reaction
  2. 5. a compound breaks down into elements and/or smaller compounds
  3. 6. represents a chemical reaction
  4. 8. l
  5. 10. when two elements combine to form a compound
Down
  1. 1. a reaction that involves oxygen
  2. 2. numbers that go in front to indicate the number of atoms or molecules reacting or being produced
  3. 4. s
  4. 7. aq
  5. 9. g