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3 Written questions

3 Multiple choice questions

  1. a material that increases the rate of a reaction by lowering the activation energy
  2. a material that decreases the rate of a reaction
  3. a biological catalyst that lowers the activation energy of reactions in cells

2 True/False questions

  1. exothermic reactiona reaction that releases energy in the form of heat


  2. concentrationthe amount of one material in a given volume of another material


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