GPA is a good start, what kind of research/internship/etc experience do you have? Do you have 3 professors (that's what all of mine required this past year) that you have a good relationship with that will write you good letters?
From what I gathered, experience and letters are a pretty important factor. Obviously if your GPA and scores are miserable then it will impact you, but I'm not sure at 3.75 is going to severely impede you.
Are you planning on taking the Chemistry GRE? You should figure out early if schools you're interested in will require it. If they do, you'll want to start studying so you can rock it. It touches on everything you've learned: general, analytical, pchem, inorganic and orgo.