The purpose of this module is to teach participants the principles of zero and first order kinetics and to use them to predict the shelf life of quality attributes. By the end of the module they will have learned: a) How to describe a zero order reaction. b) How to determine zero order rate constant. c) How to describe a first order reaction. d) How to determine a first order rate constant. e) How to predict shelf life of a food whose quality attribute is increasing or decreasing while following zero or first order kinetics. f) Some of the key concerns in using principles of chemical kinetics to describe rate of reactions.