<p>So my AP Chemistry teacher wants us to take practice tests over Christmas/Holiday break, and since I’m also studying for the SAT Chemistry test, I decided to start with that one…and the barron’s practice test kicked my butt! It was even asking about Gibbs free enegy: we haven’t even done that in AP yet!</p>
<p>Anyone else had this happen to them?</p>
<p>I have both Barrons AP Chem/SATII - personally, I find the SATII a lot easier to deal with (the AP book is just like a second copy of my textbook… but more complicated). But don’t stress, the Barrons SATII Chemistry book is usually harder then the actual SATII Chem test… I scored around the 600s every single practice test (which made going to take the actual test really frightening) but I got a 720, so eh… good enough for me 
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<p>(and ps - yea, gibbs free energy is explained weirdly… we haven’t covered that in ap yet either. good thing it wasn’t on the satii chem i took!)</p>