Official 2011 AP Chemistry Thread

Test Preparation AP Sciences
401

<p>Quick question:</p>

<p>I know that gas dissolves best at low temperatures and high pressures, but what about solids? Do they dissolve best at high temperatures and low pressures or high temperatures and high pressures? Why?</p>

402

<p>@FlamingMango</p>

<p>I missed 16 but that was because I made stupid mistakes. Now I’m averaging about only having 7 to 10 wrong per test. Multiple choice isn’t horribly hard, but it is still pretty difficult. I personally find the FR section to be more difficult. Speaking of which, I would like to confirm that we are allowed to use the formula sheet for the entire Free Response portion. Is that correct?</p>

403

<p>oh thanks, i’ll just learn the few in PR i suppose to be safe.</p>

<p>do you get the formula sheet and reduction potentials sheet on the MC part?</p>

404

<p>@isk82live</p>

<p>No, you’re on your own for the MC section.</p>

405

<p>haha great first post, i know, but could anybody tell me the definition of the broglie hypothesis? i just saw it for the first time… hopefully that’s not bad…</p>

406

<p>MC: Periodic Table, Symbols (P=pressure, m=molal, etc), a Sane Fresh Mind</p>

<p>FRQ: Calc for #1-3, Formula Sheet for all, Period Table for all, scared worn out confused mind</p>

407

<p>Hang in there (I keep reading your name as Flamingo…wonder if that was intended by you)! There’s less than 36 hours to go! Study, study, study. GAHHHHHHHH.</p>

<p>Thanks by the way for the info.</p>

408

<p>de Broglie was wavelength = h/mv</p>

409

<p>I got 6 AP’s and 3 SAT’s in the next two weeks so no sleep for a while for me haha.</p>

410

<p>oh alright thanks, i did know that existed, i just, didn’t know it had a name</p>

411

<p>Im sure everyone knows about Khan Academy by now.</p>

<p>Heres a cram packet that you might find useful <a href=“http://www.ocf.berkeley.edu/~daradib/chsntech/review/science/chem/notes.pdf[/url]”>http://www.ocf.berkeley.edu/~daradib/chsntech/review/science/chem/notes.pdf&lt;/a&gt;&lt;/p&gt;

<p>Heres a list of colors since most classes never learn them <a href=“http://www.wentzville.k12.mo.us/tinymce/filemanager/files/users/davidbrothers/color_review.doc[/url]”>http://www.wentzville.k12.mo.us/tinymce/filemanager/files/users/davidbrothers/color_review.doc&lt;/a&gt;&lt;/p&gt;

<p>Heres some stuff on Complex ions since thats a topic that usually falls through the crack as well [Complex</a> ions menu](<a href=“http://www.chemguide.co.uk/inorganic/complexmenu.html]Complex”>Complex ions menu)
Chemguide also has good info on other stuff.</p>

<p>Heres an AP score estimator, has chem and others [AP</a> Pass - AP Chemistry Calculator](<a href=“http://appass.com/calculators/chemistry]AP”>AP Chemistry Test Score Calculator - AP Pass)</p>

<p>Id post the 2002/2008/2009 MC/answers but I think theres some rule against that and i dont wanna get slapped. (cause you know, college board is non profit so it has to charge 30 bucks per test)</p>

412

<p>For me…
completely vague:
Structure of Matter
gases
organic chemistry</p>

<p>all fresh:
Thermochemistry
Kinetics
Equilibrium
Acid & Bases
nuclear chemistry</p>

413

<p>@FlamingMango:
That document for colours is fantastic, thank you!</p>

414

<p>I should be panicking. WHY AM I NOT PANICKING.</p>

<p>I’m still SO IFFY on Intermecular Forces and that shizz.</p>

<p>HOW DO WE KNOW IF SOMETHING IS POLAR OR NONPOLAR?!?! Omg someone quizz me.</p>

415

<p>You can tell if a molecule is polar or nonpolar by its geometric symmetry. Usually, nonpolar molecules are SYMMETRIC and polar ones are not. Also, polar molecules usually have lone pairs, whereas nonpolar ones do not.
Example Question: Which one of the following is polar?
A) CH4
B)CO2
C)BF3
DNH3
E)CCl4</p>

416

<p>josesuk: D)NH3? I literally drew all of the structures…</p>

417

<p>I reeeeallly hope there aren’t any questions on bonding/electron geometry</p>

418

<p>I reeeally hope the first FRQ (the equilibrium one) is not an acid/base titration. I’ve got the multiple choice down (I just have to slow down and stop making careless errors, but even if I make some I feel confident enough in my MC scores) but the FRQs could possibly mess me up. I got a 5 on my final (which was an old AP) but I did not do very well on the acid/base titration FRQ.</p>

419

<p>Kc pleaseeee.</p>

420

<p>@Coffee</p>

<p>I agree…I am terrible at solving acid/base titrations…anyone got pointers for those?</p>