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Factors Influencing Rates quiz

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Terms in this set (18)

  • Which factors affect the rate of diffusion?
    The rate of diffusion is affected by temperature, concentration, and surface area. Catalysts do not directly affect diffusion rates.
  • Which results in an increase in the rate of diffusion? (a) Decreasing temperature, (b) Increasing surface area, (c) Reducing reactant concentration, (d) Removing a catalyst
    Increasing surface area results in an increase in the rate of diffusion.
  • How does distance affect the rate of diffusion?
    Increasing the distance over which diffusion must occur generally decreases the rate of diffusion.
  • Which factor does not affect the rate of diffusion: temperature, concentration, surface area, or color of reactants?
    The color of reactants does not affect the rate of diffusion.
  • Which of these will affect the rate of diffusion? (a) Temperature, (b) Pressure, (c) Surface area, (d) All of the above
    All of the above: temperature, pressure, and surface area affect the rate of diffusion.
  • Which factors would increase the rate of diffusion? (a) Higher temperature, (b) Larger surface area, (c) Lower concentration, (d) Both a and b
    Both a and b: Higher temperature and larger surface area would increase the rate of diffusion.
  • What effect does increasing reactant concentration have on the diffusion rate?
    Increasing reactant concentration would increase the diffusion rate.
  • Which factors influence diffusion rates?
    All of the above: temperature, concentration, and surface area influence diffusion rates.
  • What can you do to speed the reaction up again?
    To speed up the reaction, you can increase the temperature, increase the concentration of reactants, increase the surface area, or add a catalyst.
  • How can a living cell increase the rate of a chemical reaction?
    A living cell can increase the rate of a chemical reaction by using enzymes, which act as catalysts to lower activation energy.
  • What factor does not influence the rate of diffusion?
    The color of reactants does not influence the rate of diffusion.
  • Which factors affect the rate of diffusion?
    Temperature, concentration, and surface area affect the rate of diffusion.
  • Which of these changes might increase the rate of the reaction beyond point C? (a) Increasing temperature, (b) Decreasing reactant concentration, (c) Reducing surface area, (d) Removing a catalyst
    Increasing temperature might increase the rate of the reaction beyond point C.
  • What factor will increase the rate of diffusion?
    Increasing surface area will increase the rate of diffusion.
  • Which of the following is not a rate: reaction rate, diffusion rate, temperature, or collision frequency?
    Temperature is not a rate.
  • What factor is not a main factor that affects the rate of diffusion?
    The color of reactants is not a main factor that affects the rate of diffusion.
  • What factor does not impact the rate of a chemical reaction?
    The color of reactants does not impact the rate of a chemical reaction.
  • Which of the factors affects the rate of diffusion of a substance? (a) Temperature, (b) Concentration, (c) Surface area, (d) All of the above
    All of the above: temperature, concentration, and surface area affect the rate of diffusion of a substance.