<p>Look, AP chem is a joke for the first semester. If you did well in the introductory course, skip the first 3/4 of the material for now and go staright to kinetics, equillibrium, and weak acids and bases/buffers. The last quarter is actually somewhat challenging, but by far the most interesting.</p>
<p>All in all, you only need 60% for a 5; definitely possible.</p>