I am a chem major in college and taking my first calc 1 course this semester-I am little late from my peers in learning math, I was bio major and did not have to take math that seriously before. So far I really like calculus and I don't have any trouble whatsoever in it. I am considering to take more advanced math courses after being done with all the calculus series, like Diff.Equation, linear algebra, statistics, etc. I am wondering how much math one should know in science to be considered to have a strong background in math? One TA who does theoretical chem told me that more math I know, easier it will be in grad school chem, because most people's trouble tends to be a lack of math skills in science. I am interested in having at least minor in physics, because I like quantum mech and want to do something like mixture of chem and physics. TAs and other people tell me that I need strong math skills and how much math is strong enough? I saw there are abstract algebra and other courses like that, but do I really need that kind of abstract math? What other math courses or books, topics would you guys suggest to me beyond diff.eq and linear algebra? I am done with all the humanities courses, so I have gaps in my schedule, which I plan to fill with extra math's. Then I need suggestions from people who know the facts of a real world. Thank you.