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Section 2: Factors Affecting Reaction Rates

Factors Affecting Reaction Rates

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.
What will happen when you decrease the surface area of a reactant?
A)The reaction speeds up.
B)The reaction slows down.
C)The reaction stops.
D)The reaction rate does not change.
3.
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
4.
A substance that speeds up the reaction rate but is not consumed in the reaction is a(n) ____________.
A)reactant
B)product
C)catalyst
D)inhibitor
5.
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.
6.
What is the name given to a catalyst that exists in the same physical state as the reaction being catalyzed?
A)homogeneous catalyst
B)heterogeneous catalyst
C)solid-state catalyst
D)ephemiral catalyst
7.
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
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