The only study guide you'll need for the AP Chemistry test-revised and updated, now with a 20-question Diagnostic Quiz Confidence is key when taking any exam, and it will come easier if you spend your test prep time wisely-even if you've been so busy that you've put off preparing until the last weeks before the exam. You'll find the smartest, most effective test prep in 5 Steps to a 5: 500 AP Chemistry Questions to Know by Test...