Hey, dear followers or guests: Here is an idea of Chemistry. When you yourself think about this problem to let react 2-3 chemicals to 2-3 chemicals each in different energetical environments, when you think at chemical equilibrium, when you think at the issue of changing aggregate states while sth. is reaction, you'll get a view into my problem: more than just coding, more than the stuff in chemistry class, more than you've learned in grammarschool. That's why my PhyChi has problems to be filled with chemistry. Besides that chemical reactions have to exist in only few and specific areas because of the calculational weight. The following table a view in the datasets I am using at the moment. Thought this may not be finally and there may be some lines whose content you don't understand: just google for it and when you still don't understand it don't worry, I felt the same.