The Rate of a Chemical Reaction Increases with an Increase

Multiple Choice

The rate of a chemical reaction increases with an increase in the concentration of one or more reactants. This is best explained by which statement?

A) The higher concentration of reactants increases the potential energy of the molecules.
B) The higher concentration of reactants increases the activation energy of the reaction.
C) The higher concentration of reactants increases the temperature of the molecules.
D) The higher concentration of reactants increases the frequency of collisions between molecules.