This book is for students who need extra help or preparation for the difficult chemistry concepts and tools that will be encountered in a typical high-school level chemistry class. Some students may also benefit from reviewing these basic concepts before starting a college introductory or organic chemistry class. It is a useful supplement to any class textbook and gives a unique perspective on the subject. Whether you are taking chemistry for the first time in high school, have a child who needs help with homework, or just want to find out more about chemistry, this book can help. Topics include The Atom, The Mole, Scientific Notation, Significant Figures, Unit Conversions, Bonding, Chemical Reactions, and Solubility. Problem-solving advice, homework tips, and test taking skills are also included.