Reaction Rates

8. Chemical reaction rates depend on factors that influence the frequency of collision of reactant molecules.

As a basis for understanding this concept, students know:

a. the rate of reaction is the decrease in concentration of reactants or the increase in concentration of products with time.
b. how reaction rates depend on such factors as concentration, temperature, and pressure.
 c. the role a catalyst plays in increasing the reaction rate.
d.* the definition and role of activation energy in a chemical reaction.

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