Chapter 2

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Across
  1. 3. A reaction that switches places forming a new compound.
  2. 4. The substances produced by a chemical reaction.
  3. 6. A reaction that releases thermal energy.
  4. 7. substance that increase reaction rate by lowering the activation energy.
  5. 8. A reaction that absorbs energy.
  6. 10. A chemical reaction that produces carbon dioxide and water.
  7. 11. A chemical reaction when one compound breaks down into two substances.
  8. 12. A substance that slows or stops a reaction.
Down
  1. 1. The small amount of energy needed to start a reaction.
  2. 2. The starting substances in a chemical reaction.
  3. 5. A process in which atoms rearrange to form a new substance.
  4. 6. A catalyst that speeds up a reaction.
  5. 9. A chemical reaction that has two substances combine to make a compound.