chemical equations

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Across
  1. 3. a chemical reaction showing matter was +/-
  2. 4. substances present before chemical reaction
  3. 6. changing reactants into products
  4. 7. a pure substance that cant be broken down
  5. 10. mass is never created ordestroyed
Down
  1. 1. the substances after a chemical reaction
  2. 2. the number in front of a chemical formula
  3. 5. chemical reaction showing no matter was +/-
  4. 8. a group of atoms bonded together
  5. 9. anything that has mass and takes up space