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