5.02 Factors Affecting Reaction Rates Quiz
How does a catalyst affect the activation energy of a reaction?
A catalyst decreases the activation energy needed for a reaction.
How will increasing the surface area of one or more reactants affect the reaction rate of a system?
It will speed up the reaction.
Some metals found in a car's exhaust system speed up a chemical reaction but are not used up. How do these metals work to speed up the reaction?
They act as catalysts.
Which theory explains the increase in reaction rate caused by raising the temperature or raising the pressure of a system?
collision theory
Which change will usually speed the reaction rate of a chemical system? decrease the temperature of the system increase the concentration of a reactant increase the concentration a product decrease the pressure of a system
increase the concentration of a reactant
