The change in concentration of a recatant or product per unit time. Unit: mol/(L·s).
States that atoms, ions, and molecules must collide in order to react.
A temporary, unstable arrangement of atoms that may form products or may break apart to re-form the reactants.
The activated complex.
The minimum amount of energy that reacting particles must have to form the activated complex and lead to a reaction. Represented by (E_a).
A substance that increases the rate of a chemical reaction without itself being consumed in the reaction.
A substance that slows down, or inhibits, reaction rates.
Exists in a physical state different than that of the reaction it catalyzes.
Exists in the same physical state as the reaction it catalyzes.
The equation that expresses the mathematical relationship between the rate of a chemical reaction and the concentration of reactants.
specific rate constant
A numerical value that relates reaction rate and concentration of reactants at a given temperature.
Defines how the rate is affected by the concentration of that reactant.
method of initial rates
Determines reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations.
The rate of decomposition at a specific time.
A reaction that consists of two or more elementary steps.
The complete sequence of elementary steps that make up a complex reaction.
A substance produced in one elementary step and consumed in a subsequent elementary step.
The slowest of the elementary steps in a complex reaction.