These five sentences for each i5 Chemistry chapter will help you organize and clear up the most important concepts in any high school, Advanced Placement ®, or general college course. Every topic is covered in just FIVE easy to understand sentences with helpful examples. If you can answer every sentence, you will be very successful in your course. There are no guarantees that come with this app, just a lot of useful information without the fluff contained in your expen$ive textbooks.