<p>I got a 790 on the May test and I’m taking it again this Saturday. But I haven’t been able to study much this month. Is it bad if I actually get a lower score the second time I take it?</p>
<p>creampuffer, if it’s the only one you’re taking on Saturday, then you can use score choice and decide not to let colleges see it if the score is lower.</p>
<p>You’re retaking it to gain 10 points? -_-</p>
<p>Also, back to the test. The only Organic Chem questions I’ve seen on practice tests are pretty much testing our knowledge of alkane, alkene, and alkyne… just basically knowing CnH2n+2, CnH2n, Cn H2n-2. Is there anything specific i should learn now? I didnt start organic chem in my class yet -_- so what i just mentioned is all i know, and I’ve gotten all orgo questions right on the practice tests so far so I dont wanna worry about learning new stuff…</p>
<p>yeah you need to know whats saturated.</p>
<p>saturated = all single bonds</p>
<p>thus alkanes are saturated</p>
<p>For organic chem, they almost always ask a question phrased something like “which one of these is a saturated hydrocarbon” (answer: the one with only single bonds)… hope this helps!</p>
<p>are you guys in AP chem? if so, then you have nothing to worry about, it’s wayyy easier than the AP test</p>
<p>Hi all! I was going to take the Chem and Math 2 tests on June 5, but I’m grossly underprepared and want to skip the Chem test and take it this fall, if possible. I know that the date to make changes to your test admission ticket has passed, but I called the College Board support line, and they said that I can tell the proctor (as soon as I enter the test room) that I only want to take the Math 2 test, and that I do not want to take the Chem test. They also said that this would not show up on any transcripts/score reports that the colleges receive, and though I’ll lose the $20, it’ll be like I never signed up to take the test, and it won’t affect my scores. Is this true? Thank you so much!</p>
<p>Maybe you can take Chem and see how you do. Retake it when you want to take it. Score choice, perhaps?</p>
<p>And yeah, I’ve seen two ‘saturated’ organic questions. It was the choice that is CnH2n+2 (alkane)</p>
<p>I didnt take AP Chem, just honors level</p>
<p>Can anyone explain to me the concepts of Ka and Kb of acids/bases to me and how they affect the solution/ strength of acid/base?</p>
<p>ok. strong acids dissociate 100%. weak acids do not. Ka is the acid dissociation constant. the greater it is, the more it dissociates (since its products over reactants, meaning that more products have been created). </p>
<p>guys i found something off of an MCAT forum for your solubility rules needs:</p>
<p>CASHnGIA</p>
<p>"you make cash (since your a pimp) off your hoe named Gia.</p>
<p>means all chlorates, acetates, sulfrates, halogens, nitrates, and Group I metals are soluble.</p>
<p>but what about the special cases?</p>
<p>well theres something for that too:</p>
<p>Sulfates = CBS <- Ca, Br, Sr
Halogens = CBS + Happy</p>
<p>Happy is just -> Hg, Ag, Pb with a py added</p>
<p>^lol , that’s actually pretty useful </p>
<p>btw, how are you guys studying for the lab questions, my barron’s didn’t really cover them and in my ap chem class this year we didn’t do over a lot of lab procedures and what to do/what not to do with certain equipments so I’m really underprepared for that section</p>
<p>^ I don’t think they’ll put that many questions on that kind of stuff… I mean, basically the only lab techniques you need to know are like titration, distillation, and filtration, right?</p>
<p>I’m praying there’s nothing/not much on electrochemistry, it confuses the hell out of me.</p>
<p>Does anyone know (past test takers) the relative difficulty of the Barrons practice tests compared with that of the actual test? I know for Math II, Barrons’s practice tests seem to be considered universally harder than the actual test.</p>
<p>How do you calculate whether something is polar or nonpolar if you don’t have the electronegative values of the elements?</p>
<p>^If its talking about the bonds that exist between the atoms, then I would probably have to guess by the periodic trend and their relative location. If its talking about the molecule, i guess draw it out. From that point, I just have it memorized depending on its geometry. Or from “SNAP- symmetrical = not a polar”</p>
<p>for polar and non polar you see its structure and basic knowledge about EN difference</p>
<p>How about the substances that are polar but have non-polar bonds? And non-polar substances that have polar bonds? How do you go about figuring polarity for these substances?</p>
<p>Um. There are no substances that have non polar bonds and are ploar.
However of non polar substances with polar bonds…you just look at the geometry and shape/orientation of the molecules in space.If the resultant dipole is zero,then the ‘molecule’ as a whole is non polar even though it has polar bonds.</p>
<p>Aaah!! im so freaking out!!! When do we get to discuss the test after taking it?Iheard you have to wait for some time because of some ‘embargo’??When will that be ‘lifted’ for the saturday test?
Best of luck everybody!!</p>
<p>Do you have to know descriptive chemistry? It isn’t in Barron’s OMG</p>
<p>I’m so scared…</p>