Chemistry: Matter and Change

Section 2: Factors Affecting Reaction Rates

Self Check Quizzes

1
When the concentration of a reactant is increased, the _______________.
A)reaction speeds up
B)reaction slows down
C)reaction stops
D)reaction rate does not change
2
When you increase the temperature of a chemical reaction, the ____________.
A)reaction speeds up
B)reaction slows down
C)reaction stops
D)reaction rate does not change
3
What happens to the activation energy of the reaction when a catalyst is present?
A)The activation energy does not change.
B)The activation energy decreases.
C)The activation energy increases.
D)The reaction stops.
4
Automobiles use a catalytic converter made of metal to ensure complete combustion of gasoline. What type of catalyst is present in automobiles?
A)homogeneous catalyst
B)heterogeneous catalyst
C)solid-state catalyst
D)ephemiral catalyst
5
What might an inhibitor do in a chemical reaction?
A)speed up the reaction
B)drive the reaction to completion
C)raise the activation energy
D)lower the activation energy
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