Ch. 13 Crossword; Melanie Krempec

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Across
  1. 2. how quickly the concentration of reactants decreases and increases
  2. 6. no atoms are gained or lost during any reaction instead atoms change partners to form new materials
  3. 8. when a reaction an its reverse act are at the same rate
  4. 10. a substance that lowers the activation energy of a chemical reaction, whivh alows for the reaction to proceed at a faster rate
Down
  1. 1. a net absorption of energy (heat entering the reaction)
  2. 3. net release of energy (heat leaving the reaction)
  3. 4. the minimum energy required to overcome the initial breaking of bonds in reactants
  4. 5. the amount of energy required to pull two bonded atoms apart, which is the same as the amount of energy released when they are brought back together
  5. 7. a chemical that donates a hydrogen ion
  6. 9. a chemical that accepts hydrogen ions