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BJU Chemistry Ch 14

Bob Jones Chemistry - Chapter 14

activated complex A theoretical, unstable, energetic group of reactants that forms as a transitional structure during a chemical reaction.
activation energy The minimum amount of kinetic energy required before colliding molecules can react.
catalyst A substance that changes a reaction rate without being permanently changed in the process.
collision theory The theory that molecules and atoms must undergo forceful, properly oriented collisions before they can meet.
complex reaction The combination of the individual elementary steps of a reaction.
elementary step Two or more possible steps that make up a reaction mechanism.
enzyme A naturally occurring protein molecule that acts as a catalyst.
heterogeneous catalyst A catalyst that is in a phase different from the reactants.
heterogeneous reaction A reaction in which the reactants are in different phases.
homogeneous catalyst A catalyst that is in the same phase as a reactant or in solution with the reactant.
homogeneous reaction A reaction in which the reactants and products are all in the same phase.
inhibitor A substance used to slow a reaction or reduce a catalyst's undesirable effects.
intermediate A substance formed in one step and consumed in the next step during a complex reaction. It does not appear in the net chemical equation.
kinetics In chemistry, the study of the rates of reactions and the steps by which they occur.
pharmacokinetics The study of how the human body processes medication. It includes absorption, distribution, metabolism, and excretion.
rate-determining step The slowest elementary step in the reaction; the speed-limiting step.
rate law An equation that mathematically describes how fast a reaction occurs.
reaction mechanism The series of steps that make up a reaction.
reaction order An indicator of how the rate of a reaction is affected by that specific reactant's concentration.
reaction rate The speed at which reactants disappear or products appear in a chemical reaction.
specific rate constant (k) The experimentally determined rate constant for each individual reaction.
Created by: heidio