Kinetics Quiz
Preview:
To slow down a chemical reaction you will do one of the following:
A. Place the reactants in hot water
B. Place the products in ice bath
C. Place the reactants in a ice bath
D. Keep stirring the reactants with a stirring rod
More collisions correspond to a:
A. Faster reaction rate
B. Slower reaction rate
C. Constant reaction rate
D. None of the above
Under the collision theory, the particles must collide with ____ and ____ for a reaction to occur.
A. sufficient rate and sufficient energy
B. sufficient surface area and correct orientation
C. sufficient catalyst and sufficient energy
D. sufficent energy and correct orientation
What is activation energy?
A. The maximum amount of energy used
B. The minimum amount of energy required for a reaction to start
C. The energy of the reactants
D. The energy possessed by the products
Which of the following increase the reaction rate?
A. less surface area
B. lower temperature
C. an inhibitor
D. increased concentration
Which of the following is NOT a factor affecting reaction rate?
A. temperature
B. catalysts
C. particle size
D. polarity
Decreasing the particle size increases the reaction rate because
A. It makes particles move faster
B. It increases the likelihood of collisions with the correct geometry
C. It decreases the surface area available to react
D. It increases the number of collisions
Why does a higher temperature increase the rate of a reaction?
A. it increases both the frequency and energy of particle collisions
B. it only increases the frequency of particle collisions
C. it only increases the energy of particle collisions
D. it reduces the activation energy of the reaction
Grinding a seltzer tablet into powder increases the rate of reaction due to…
A. increased concentration of reactants
B. increased surface area
C. increased speed of particles.
D. better orientation of reactants
More collisions correspond to a:
A. Faster reaction rate
B. Slower reaction rate
C. Constant reaction rate
D. None of the above
Reaction rate means…
A. amount of product formed
B. speed of reaction
C. concentration of reacting particles
D. combining reactants with products
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