Conservation of mass and types of reactions

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Across
  1. 2. substance made up of only one type of atom
  2. 5. what is in the middle of an reaction
  3. 6. on the right side of a reaction
  4. 10. A+B -> AB
  5. 11. H20
  6. 12. AB -> A+B
Down
  1. 1. chemical reaction need to be ________
  2. 3. what is the __________ of mass
  3. 4. number put in front of a molecule in a chemical reaction
  4. 7. on the left side of a reaction
  5. 8. the small numbers in a chemical equation
  6. 9. an atom with a positive or negative charge