rate of reaction
3 years ago
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15 QuestionsShow answers
  • Question 1
    60 seconds
    Q. Which line shows the reactants with the largest surface area?
    answer choices
    B
    A
  • Question 2
    60 seconds
    Q. A substance that increases speed of chemical reaction without being being changed is called:
    answer choices
    Catalyst
    Acid
    Base
    pressure
  • Question 3
    60 seconds
    Q. Activation energy is required to start a chemical reaction. What is activation energy?
    answer choices
    The energy needed for a reaction to occur
    The minimum amount of energy needed for a reaction to potentially occur
    The energy added by a catalyst
    The energy possessed by the products
  • Question 4
    60 seconds
    Q. Increase in temperature of the reactants can do one of the following
    answer choices
    Slow collision frequency
    Allow less effective collision between the particles
    Cause particles to lose speed
    Increase collision between the particles thus increasing the rate.
  • Question 5
    60 seconds
    Q. Increasing the pressure of a reacting vessel only affects:
    answer choices
    Gaseous reactants
    Solid reactants
    Liquid reactants
    None of the above
  • Question 6
    60 seconds
    Q. Decreasing the particle size increases the reaction rate because
    answer choices
    It makes particles move faster
    It increases the likelihood of collisions with the correct geometry
    It decreases the surface area available to react
    It increases the number of collisions
  • Question 7
    60 seconds
    Q. This helps to speed up a reaction but does not take part in the chemical reaction. 
    answer choices
    coeffiecents
    reactants
    catalyst
    combustion
  • Question 8
    60 seconds
    Q. The amount of a substance in a given volume.
    answer choices
    concentration
    temperature
    surface area
    catalyst
  • Question 9
    60 seconds
    Q. Grinding a seltzer tablet into powder increases the rate of reaction due to increased
    answer choices
    concentration
    surface area
    temperature
    reactants
  • Question 10
    60 seconds
    Q. Exposing more particles for collisions is an increase in 
    answer choices
    concentration
    surface area
    temperature
    catalyst
  • Question 11
    60 seconds
    Q. Increasing the concentration increases the speed of reaction by
    answer choices
    lowering activation energy
    increasing collisions
    speeding up the reactants
    exposing more reactant
  • Question 12
    60 seconds
    Q. Which factors increase the rate of a reaction.
    answer choices
    increasing temperature
    increasing concentration
    increasing surface area
    all of these
  • Question 13
    60 seconds
    Q. Increasing concentration increases reaction rate due to more collisions.
    answer choices
    True
    False
  • Question 14
    60 seconds
    Q. Which of the following slows down the rate of a chemical reaction?
    answer choices
    Place the reactants in hot water
    Place the products in ice bath
    Place the reactants in a ice bath
    Keep stirring the reactants with a stirring rod
  • Question 15
    30 seconds
    Q. Which reaction is at the highest temperature?
    answer choices
    A
    B
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