Our primary purpose in writing this book has been to fashion a clear and cohesive introduction to chemistry, covering both important facts. We write to explain chemistry to student today the way we wish it had been explained to us years ago when we were students ourselves. We can’t claim that learning chemistry will always be easy, but we can promise that we have done our best in planning, writing and illustrating this book to make the learning process as smooth as possible. Perhaps the first thing you will notice about this book is that its organization is different from that of other introductory chemistry textbooks