Samuels CHEM Chemical Kinetics I: Question Preview (ID: 31599)


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The kinetic energy needed for molecules to chemically react is known as ______.
a) activation energy b) concentration c) potential energy d) catalyst
If the concentration is increased the reaction rate will:
a) increase b) decrease c) stay the same d) there is not enough information
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) increase the pressure d) decrease the temperature
What is a substance that alters the rate of a chemical reaction without being permanently changed in the chemical reaction?
a) catalyst b) reactant c) product d) coefficient
What is not true of a catalyst?
a) increases activation energy b) lowers the activation energy c) written over the arrow d) increases rate of reaction
A decrease in temperature will do what to a chemical reaction?
a) slow it down b) speed it up c) equalize it d) nothing
Which of the following states that reactant particles must collide for a chemical reaction to occur?
a) collision theory b) activation theory c) reaction theory d) kinetic theory
Which of the following is created as a temporary, high energy, unstable molecule during a reaction?
a) activated complex b) enthalpy complex c) endothermic complex d) exothermic complex
The difference in amount of energy contained by the reactant and the products is known as ______.
a) enthalpy of reaction b) exothermic of reaction c) endothermic of reaction d) activation energy
This looks at the rate of chemical reactions.
a) chemical kinetics b) equilibrium c) biochemistry d) nuclear chemistry
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