<p>We don’t, but some questions do show up on the PR’s practice test…</p>
<p>I definitely agree with aggieengineer. I took the 2002 and the 2008 test and thought they were very close just the wording was different. I even recieved the exact same score of 63 on both tests.</p>
<p>I’m kind of wondering about the lab stuff as well though because our class didn’t cover very many and there have been some on the past frq’s that we never did. Luckily I think the ones we didn’t cover can still be bsed to get some points</p>
<p>i got a 47/75 on the 2008 test. If I were to have done decently on the FRQ, (lets say 60% of FRQ correct? Maybe more) would that possibly become a 5?</p>
<p>10 wrong, skipped like 16, so did like 59. = 56.5 roughly…good enough lol</p>
<p>hey for the frq portion, is writing the equation that you’re using (with just variables and stuff) always necessary as the first step?</p>
<p>also, do we get a list of the colors for burn tests ? (for various metals)</p>
<p>no unfortunately.</p>
<p>Yeah I got +63 on the 2002, but +49 on the 2008… ***. I have no idea why, but I got like 5/18 on part A…</p>
<p>Guys, on the Part A of the M/C, can there be more than one choice? Like can question 1 and 4 have the same answer? </p>
<p>It’s the ones that gives you like some data and you choose from A to E for questions 1 - 4.</p>
<p>I noticed that on PR, they do that, but do they do that for the actual exam?</p>
<p>@lemone</p>
<p>They did on the SAT subject test for chemistry, so I’d assume they’d do the same on the AP test</p>
<p>can someone explain quantum numbers? I don’t get it lol</p>
<p>Like if a question wants me to find the quantum numbers for a specific element (IE K or Li) I would have no idea what to do.</p>
<p>The only number i can get is n, but I’m clueless about l and ml (2nd and third)</p>
<p>
</p>
<p>I didn’t catch that at all…you mean they did it or not?</p>
<p>They did do it. Buret was the answer to two questions.</p>
<p>Where is everybody finding these MC tests?</p>
<p>dang, I haven’t learned any cell potential stuff! should I bother???</p>
<p>I just did the 2007 FRQ and got 23/45 on it. One question I got 0 points on because I knew none of the cell stuff…but I’ve heard about half is what I should aim for on the FRQs. If there’s not a ? on this, then I’m in good shape. </p>
<p>Can anyone explain cell potentials to me really quickly? Thanks!</p>
<p>for part B, #4 - where you write equations…
some of the equations are just so bizarre! how are we supposed to know some of them?
does anyone have a good website that explains equation writing?</p>
<p>jacmoo, it’s really not bizarre. you just have to know solubility rules.<br>
CANS are soluble…chlorides and ates, acetates, nitrates, and sulfates. then know group 1A are soluble too, and a few exceptions and you should be able tofigure most out.</p>
<p>For those who want to do some serious studying, join the AIM group: apchemstudy</p>
<p>@ beta_fist
yeah i agree, and thanks for the acronym! im talking about the ones where its like… uh here ill give you an example</p>
<p>N2O5 + H2O –> ?
i know it should yield HNO or HNO2 or HNO3, but how do i know which one? (sorry, our teacher just never went over any of this)</p>
<p>quantum #s:
N= 1-4 (the number before L when you’re writing orbital notation)
L= 0-3 (0=s,1=p,2=d,3=f)
M= -L to +L
M= +/- 1/2</p>
<p>book says to think of it like country-state-city-address (mainly for n and l)</p>
<p>That’s basically what I know, and I’ve gotten every question right about them on the practice tests…</p>
<p>Beta_Fist: You should definitely learn cell stuff.</p>
<p>All it is, is basically redox reactions.</p>
<p>Say silver is being reduced. This means it is gaining electrons, lowering it’s charge.</p>
<p>OIL RIG (Oxidation is Losing, Reduction is Gaining)</p>
<p>Ag+ + e- -> Ag (+0.8V)</p>
<p>This means that 0.8 volts is released when silver is reduced. If the voltage is positive, that means the process is spontaneous. That’s why if you turn the equation around so that silver is being oxidized, the voltage is negative, meaning it is not spontaneous.</p>
<p>Ag -> Ag+ + e- (-0.8V)</p>
<p>They give us a table of the reduction potentials. The ones on the list that have positive voltages are spontaneously reduced. The ones on the list that have negative voltages are spontaneously oxidized.</p>
<p>When you have an equation like: Cu+2 + Zn -> Zn+2 + Cu
Copper is being reduced because it is gaining electrons and zinc is being oxidized because it is losing electrons.</p>
<p>So you use the half-cell reaction of copper being reduced (Cu+2 + 2e- -> Cu (+0.34 V)) and the zinc being oxidized (which is the opposite of the zinc reaction where it’s reduced) (Zn -> Zn+2 + 2e- (+0.76 V)).</p>
<p>Add the two, just like you add reactions, and you get:</p>
<p>Cu+2 + Zn -> Zn+2 + Cu (+1.1 V)</p>