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3 Written questions

3 Multiple choice questions

  1. a material that decreases the rate of a reaction
  2. the amount of one material in a given volume of another material
  3. a biological catalyst that lowers the activation energy of reactions in cells

2 True/False questions

  1. concentration, surface area, temperaturethe amount of one material in a given volume of another material

          

  2. exothermic reactiona reaction that absorbs energy