The branch of science which studies the structure and composition of matter is known as chemistry. Some of the principles of modern chemistry are bonding, energy, ions and salts, equilibrium, chemical laws, redox, etc. Chemistry can be categorized into a number of branches such as inorganic chemistry, materials chemistry, analytical chemistry, biochemistry, etc. This book will provide interesting topics for research which readers can take up. The aim of this book is to present researches that have transformed this discipline and aided its advancement. The readers would gain knowledge that would broaden their perspective about the subject.