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      Question

      Which substance changes the rate of chemical reactions

      and remains chemically different during reaction?
      A Reactor Correct Answer Incorrect Answer
      B Solvent Correct Answer Incorrect Answer
      C Trigger Correct Answer Incorrect Answer
      D Exposure Correct Answer Incorrect Answer

      Solution

      "Trigger" loosely, it could be seen as a factor that initiates or changes the rate of a reaction. Typically, in chemistry, such a role is played by a catalyst, but a catalyst does not undergo permanent chemical change itself.

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