<p>When you have a lab question, they just want the essential steps.</p>
<p>Ex. An old lab question was determine the percent ELEMENT of some COMPOUND.</p>
<p>Steps:</p>
<p>React with what chemical to form precip.
Filter out precip
Weight dried precip</p>
<p>And that would be enough.</p>
<p>Look at the scoring guidelines for previous years on APCentral for more clarification.</p>
<p>Look, it's quite easy to get a 5!</p>
<p>On my in class practice exam, I missed 34 questions on the multiple choice (30 wrong, 4 skipped), but owned the free response section (I think I got a 95% or something)</p>
<p>The curve says a composite score of 99-160 is a 5! So as long as you can compensate your bad MC with a good FR you can get a 5 or a 4. YOU CAN DO IT.</p>
<p>Hi, everyone. I took AP Chem last year. The night before the test, I took a practice test and got a 2. But I got a 5 on the real thing. I think some of the practice tests are ridiculously hard compared to the real test. I hope some of you find this encouraging. Good luck on your test!</p>
<p>How many of you is this your only year of chem? At our school we take 2 years of each science class, so I'm wondering what the rest of the nation does.</p>
<p>107-160 = 5 in 2002.</p>
<p>Barrons Is The Crap</p>
<p>I'm hoping for a 4. I 790'ed the SAT II Chem with minimal prep and a self-study but AP Chem is going to be harder also with a self-study..I also got 44 on National Chem Olympiad with minimal prep as well (organic chem and laboratory killed me so excluding them, I did relatively well).</p>
<p>I'm so nervous. Ugh. The MC is so hard ... I'm actually getting the descriptive chem. </p>
<p>And FRQ ... I'll work on those tonight, after MC.</p>
<p>Goodness. I'm getting really stressed over this test ...</p>
<p>im getting excited to see. usually i do okay on MC (around 50). if i do well on the equilibrium problem and the descriptive chemistry, i should be fine.</p>
<p>I'm using Princeton Review right now. I'm feeling pretty confident too. I really don't think it will be all that bad, especially with the nice curve and all. My advice: Memorize chemical reactions and pick up easy points on the reaction question.</p>
<p>Wait.. so is it necessary to take AP chem to take the SAT II in chem.. im a sophomore right now and im taking honors chem.. so with just 1 year.. is it possible to get a 700ish on the SAT II.. by self studying or is it much better to just take AP chem..? Will i be prepared enough if i self study?MY chem teacher next year isnt that great.. so im not really sure how much it would help me if i took AP chem.. and chem is supposed to be one of the harder AP courses right..</p>
<p>45 points from MC
20 points from Equilibrium
15 points from Descriptive</p>
<p>you only need around 25 more points to get a 5... it's not that hard</p>
<p>i took honors chem as a sophomore and i took the sat 2 chem in june and scored 740. It is very possible to do well on the SAT 2 even without the AP course. I have AP chem this year and I took the sat 2 chem this weekend and it was even easier than it was last year.</p>
<p>I think if you have the time to study, you can do well on the sat 2</p>
<p>yeah but the thing is i can't really get 45 points on the MC right now i just get like 20 of them right at best.. i will check out PR hopefully its a bit more realistic than barrons... and maybe download some old tests ...
thanks all!</p>
<p>So which is better ARCO or princeton REview (from the lib i ain't paying lol!) my mom got me both but i don't wanna waste time with the crappy one...</p>
<p>okay i just did the test offered on collegeboard site and got 20/29 correct so i'm feeling much better... especially cuz most of the ones i missed were towards the end... barrons is just made to make people doubt themselves and study harder lmfao.. :) i mean the CB test is so much easier thank god ... now i have one question:</p>
<p>27 . Which of the following salts forms a basic solution when dissolved in water?
A) NaCl
B)(NH4)2SO4
C)CuSO4
D)K2CO3
E)NH4NO3
now why is it K2CO3 is this just a widely known fact or what? i mean why wouldn't the other ones be basic...</p>
<p>also how the are you supposed to figure out which is most soluable out of like 10 dif wierd carbon hydrogen / organic compounds</p>
<p>OK I'll try to answer this one (i need some practice):
A. is incorrect b/c NaCl is a salt made from a strong acid (HCl) and a strong base (NaOH), making it neutral.</p>
<p>B. is incorrect b/c (I think) the SO4 ion is neutral or something (or from a strong acid, it doesn't matter), and NH4+ is a Bronsted-Lowry acid b/c it donates a proton, making the solution acidic.</p>
<p>C. is incorrect ... i don't really know why, except that SO4 is from a strong acid, so it would be slightly acidic.... sorry, these explanations are getting worse and worse </p>
<p>D. I have no clue about, except that the other 4 don't make sense (sorry again)</p>
<p>E. NH4NO3 isn't it, b/c i think NH4 is acidic in itself. </p>
<p>That was not as helpful as I meant it to be, sorry. But maybe just a little... for A and B at least.</p>
<p>K2CO3 dissolves into K+ and CO3-2</p>
<p>KOH is a strong base while H2CO3 is a weak acid so...</p>
<p>K2CO3 + H2O -> K+ + OH- + HCO3-</p>
<p>The answer is CO3 because that is the only cation that will pull H+ from water producing OH- ion, making the solution basic. All the others in combination with H+ are strong acids which means they would be dissociated in solution and would not pull the H+ from water.</p>
<p>H2O(l) + CO3<em>2-(aq) = CO2(g) + OH</em>-(aq)</p>
<p>memorize those rxns lol</p>