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Samuels CHEM Chemical Kinetics I
Test Description: Chemistry Chemical Kinetics I
Instructions: Answer all questions to get your test result.
1) The kinetic energy needed for molecules to chemically react is known as ______.
A
activation energy
B
potential energy
C
catalyst
D
concentration
2) If the concentration is increased the reaction rate will:
A
increase
B
stay the same
C
there is not enough information
D
decrease
3) In order to increase reaction rate by increasing surface area of a solid, which of the following would you do?
A
increase the pressure
B
decrease the temperature
C
make the pieces bigger by clumping them
D
make the pieces smaller by grinding them
4) What is a substance that alters the rate of a chemical reaction without being permanently changed in the chemical reaction?
A
coefficient
B
product
C
reactant
D
catalyst
5) What is not true of a catalyst?
A
lowers the activation energy
B
increases activation energy
C
written over the arrow
D
increases rate of reaction
6) A decrease in temperature will do what to a chemical reaction?
A
slow it down
B
nothing
C
equalize it
D
speed it up
7) Which of the following states that reactant particles must collide for a chemical reaction to occur?
A
activation theory
B
reaction theory
C
kinetic theory
D
collision theory
8) Which of the following is created as a temporary, high energy, unstable molecule during a reaction?
A
activated complex
B
enthalpy complex
C
exothermic complex
D
endothermic complex
9) The difference in amount of energy contained by the reactant and the products is known as ______.
A
activation energy
B
enthalpy of reaction
C
exothermic of reaction
D
endothermic of reaction
10) This looks at the rate of chemical reactions.
A
nuclear chemistry
B
equilibrium
C
biochemistry
D
chemical kinetics
*select an answer for all questions
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