I am a college student and I am very serious when it comes to science. I am looking for a chemistry textbook that focuses on "why" rather than simply "what". Illustrations in textbooks are also great to help "see" what is happening. When it comes to physics, I believe Randall Knight's Physics for Scientist and Engineers 2nd edition is the best. My classmates think it is too wordy but the thing is that he doesn't just say "here is the rule, now use it". He actually shows why the rules work both quantitatively and qualitatively. I am looking for a similar chemistry textbook.