chapter 13 lucie nichols

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Across
  1. 1. chemical equations must be _______
  2. 4. amount of energy required to pull two bonds apart, which is the same as the amount of energy released when they are brought together
  3. 8. A+BC turns into AC+B
  4. 10. AB+CD turns into AD+CB
  5. 11. A+B turns into AB
  6. 12. substances that start a chemical reaction
  7. 14. reaction when there is a net absorption of energy
  8. 15. substances that are produced during a chemical reaction
Down
  1. 2. the minimum energy required to overcome the initial breaking of bonds in reactants
  2. 3. AB turns into A+B
  3. 5. during a ________, one or more new compounds are formed as a result of the rearrangement of atoms
  4. 6. how quickly the concentration of reactants decreases and how quickly the concentration of products increase
  5. 7. a color/odor change indicates what
  6. 9. no atoms are gained or lost during any reaction
  7. 13. reaction when there is a net release of energy