As a requirement for a thermodynamics course I have to teach myself basic chemistry. I borrowed a book and thought it would be easy but after getting half way into the book I realized that I wasn't really understanding anything. The problem is that it just looks like an arbitrary list of rules together with some intuition - not the sound logic that you see in math or physics classes. I just couldn't find any basic rules that could be used to deduce the other rules. How can I understand chemistry? Or is it really just rote memory? Thanks.