lila johnson mr.B physical science

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Across
  1. 3. is the minimun amount of energy to overcome the inital breaking of bonds
  2. 7. no atoms are gained or lost during any reaction
  3. 8. how quickly the concentration of reactants decreases
Down
  1. 1. were commonly used as refrigerants,
  2. 2. is a substance that lowers the actvation energy of a chemical reaction
  3. 4. a net release of energy
  4. 5. have to make physical contact with each other in order to transform into products
  5. 6. is the amount of energy to pull two bonded atoms apart
  6. 9. during a ________ reaction one or more new compounds are formed as a result of the rearrangement of atoms
  7. 10. a net absorption of energy