This book covers the material required for a basic understanding of chemical reaction engineering. Such material would normally be taught in a first chemical reaction engineering course in a university chemical engineering department. The principles of reaction engineering are simply and clearly presented; simple illustrative problems are used to demonstrate how these principles are practically applied. Further problems, with solutions, based on exam questions, are supplied. The book is written in a way that it could be used as a self-study guide and would be useful for undergraduate chemical engineers early in their degree as well as engineers and scientists of other disciplines interested in acquiring some knowledge of reaction engineering outside of a formal teaching environment.