Horoszewski Chapter 13 review.

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Across
  1. 2. Of mass conservation no atoms are gained or lost during any reaction.
  2. 3. A substance that undergoes a chemical change.
  3. 7. Combination or composition,in particular.
  4. 8. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
  5. 9. Reaction one half of an oxidation-reduction reaction,represented by an equation showing electrons as either reactants or products.
  6. 10. A substance that donates hydrogen ions.
  7. 11. A rapid exothermic oxidation-reduction reaction between a material and a molecular oxygen.
Down
  1. 1. A substance that accepts hydrogen ions.
  2. 4. Energy,Ea,is the minimum energy required to overcome the initial breaking of bonds in reactants.
  3. 5. Reaction rate is how quickly the concentration of reactants decreases and how quickly the concentration of products increases.
  4. 6. Catalyst is a substance that lowers the activation energy of a chemical reaction,which allows for the reaction to proceed at a faster rate.
  5. 8. A substance that is the result of the chemical change.
  6. 12. Energy the amount of energy required to pull two bonded atoms apart.