2.3 Modeling Chemical Reactions

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Across
  1. 3. The type of system when matter all stays in the same place.
  2. 5. The type of system when matter can enter and escape.
  3. 6. Type of reaction in which things are put together.
  4. 7. Reaction in which one element replaces another element in a compound
  5. 9. The law of ____________ of mass states that matter can not be created or destroyed.
  6. 10. The little number below the letters in a chemical formula.
Down
  1. 1. We use chemical ________________ to represent what is going on in a reaction.
  2. 2. Type of reaction where compounds break into simpler products.
  3. 4. Tells you how many of the molecules are in a reaction.
  4. 8. Area where a chemical reaction occurs.
  5. 11. A chemical equation bust be _______________.