There are few things more dread-inducing than a sink or swim Chemistry exam. Chemistry is the ultimate weed-out class for basically all STEM majors at most American universities. It plagues students who are planning on studying subjects that have nothing to do with chemistry and stunts their GPA from the first semester. I was lucky enough to get out of college without having to take a Chemistry class, but most aren't so lucky. Freshman in college gets packed into a thousand-seat lecture hall li…