<p>Does anyone have any released exams for AP Chemistry? Either link them here on CC or pm me please. Thanks.</p>
<p>@stanbrown3695
I suppose they tweaked it a slight bit after 2002 because they used to let you choose between two questions for two parts (open up both PDFs and see it for yourself). Now the weighting for each section is a bit different from before because all required questions are on test (no more choosing for you!).</p>
<p>The legally released tests are for 1999, 2002, and 2008 (and a few from years before but they had made some changes to the exam so I’m not touching the really old ones). Just surf around a bit and you’ll be able to find all three with not too much trouble.</p>
<p>Out of curiousity, are you interested in Stanford and Brown University (your name seems to suggest so)?</p>
<p>@chewydog: Haha. A typical misconception. If you look at all my other posts, I’m not really interested in both… Regarding the released exams, I’ve tried to search for them, but either that I have to subscribe to the website (which I don’t want to), or they don’t have complete documents for them. That’s why I’m asking if anyone on CC has free, complete files for these released exams.</p>
<p>@stanbrown </p>
<p>Lols, I apologize for my quick assumption. I completely empathize with your fustration because I had been to all of those stupid “pdf sharing” websites that are practically bullcrap. Here’s a link to another thread with a link to the 2008 exam that I found…</p>
<p><a href=“http://talk.collegeconfidential.com/ap-tests-preparation/925537-ap-chemistry-2008-released-exam.html[/url]”>http://talk.collegeconfidential.com/ap-tests-preparation/925537-ap-chemistry-2008-released-exam.html</a></p>
<p>I wasn’t able to relocate the other 2 exams which I found with another computer but I think they shouldn’t be that hard to find…</p>
<p>@chewydog: Thanks! Yea, I hate having to subscribe to forums just to get a released exam. Besides, everyone has the right to have access to them if they were used for practice purposes. I find people on CC to be the most helpful for these exams. :)</p>
<p>I have the 2002, 2004, and 2008 chem exams. Does anyone have an AP Calc BC, AP World, or AP Eng Lang exam to share (not practice exams)?</p>
<p>@skateme: May you send the 2002 and 2004 chem exams to me? Either link them here or pm me. Thanks.</p>
<p>^ the same for me, please! (:</p>
<p>@skateme: Actually, may you send me only the 2004 released exam? I realized that I have the 2002 one already. Thanks again.</p>
<p>Where did you find the 2004?! I heard about a possible leak but never actually found a copy. The only one I saw turned out to be just a copy of the 2002 exam that was released in 2004 and was mistaken on CC to be the 2004 exam.</p>
<p>Wasn’t sure if everyone was aware of this: [AP:</a> Chemistry](<a href=“College Board - SAT, AP, College Search and Admission Tools”>AP Chemistry Exam – AP Students | College Board)
It only contains the FRQs of previous years’ exams, however. Not the multiple choice.</p>
<p>QUESTION: I noticed the exam provides boxes for the writing equations part of the FRQs, so do we write it there instead of in the answer booklets?</p>
<p>Could someone clarify spontaneity and delta H, S and G?</p>
<p>ΔH is the change in heat between the products and reactants, ΔS is the change in disorder, and ΔG is the change in free energy. If ΔG is negative, then the reaction is spontaneous.
The equation relating ΔH, ΔS, and ΔG is ΔG = ΔH - TΔS, where T is the temperature in Kelvins.</p>
<p>A reaction is spontaneous if ΔS is positive, meaning disorder increases, and ΔH is negative (exothermic). However the equation for ΔG must be used to determine if a reaction is spontaneous because +ΔS and +ΔH could be spontaneous or not depending on the temperature of the reaction.</p>
<p>@kimberlyy
I’m not sure where you see the boxes where you write the equations?</p>
<p>Question:
Galvanic and Electrochemical cells.
If the balanced equation has coefficients, do you multiply the standard reduction potentials by their proper coefficient?</p>
<p>Also I recall reading somewhere that in a galvanic cell, oxidation occurs at the anode but the opposite (i.s. reduction) for an electrochemical cell? Is this correct?</p>
<p>Another question:
From the past free-response questions, year 1999:
<a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<p>Number 1.e) ii.
The answer is listed here: <a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<p>I did the same thing to earn the first point (the one at the bottom of the page) but why did they set the newly found [NH4+] equal to [NH3]?
I also don’t understand the how they did the second part of the problem either.</p>
<p>@kimberlyy
You’d have to ask a teacher or previous test-taker on that one. I’m curious to know as well.</p>
<p>@Abrayo
</p>
<p>No, standard cell potentials are NOT multiplied by coefficients. I don’t remember the reason bright and early in the morning but I’ll post it when my brain officially comes back online. You just manipulate by flipping equations (thus changing signs +/-) and then add together. </p>
<p>An Ox, Red Cat is how I remember oxidation @ anode and reduction @ cathode</p>
<p>This is the link to download the exams:</p>
<p><a href=“https://rapidshare.com/files/458952081/Released_AP_Chem_Exams.zip[/url]”>https://rapidshare.com/files/458952081/Released_AP_Chem_Exams.zip</a></p>
<p>I haven’t compared the 2002 and 2004 exams chewydog, but I <em>think</em> they’re different. </p>
<p>Can anyone pleaseeee send me Calc BC exams as a gesture? :)</p>
<p>@skateme:
Thanks for those, unfortunately I don’t have any Calc BC ones - though I would highly appreciate those as well if anyone is giving them away. xD</p>
<p>When writing the balanced equations in the free-response, how come you can never write “H2SO4” and you always have to write it as “H+ and HSO4-”?</p>
<p>Also, if something is being heated should I assume a liquid will be a product?
“Solid ammonium nitrate is heated to temperatures above 300C.”
(b) NH4NO3 → N2 + O2 + H2O
I wrote it as NH3 + HNO3, but as you can see, that is incorrect.
Are these mostly based on lab experience? I don’t understand how I’m expected to know, gah.</p>
<p>And again: What does “lower freezing point” mean?
For lower boiling point, it means that the substance boils at a lower temperature. . .
But does a lower freezing point mean a more negative value (so that it must be even colder to freeze) or lower as in, not as much, and thus a more positive freezing point?</p>
<hr>
<p>Are the relative bond lengths of CO3 2- 1.333? 1 for each single bond and 2 for a double . . . ? What about CO2? Would its relative bond length be 1?
To explain why the bond lengths of CO3 2- are longer, would I be allowed to say that “CO2 has two double bonds and CO3 has 2 single bonds and only 1 double bond . . . Single bonds are longer than double bonds.” etc? When reading the answers they never mention that, only the value of the relative bond length.</p>