<p>A mechanism contains a critical, rate determining step and a few fast steps … catalyst changes none of that.
Anyway, i guess i overthought and i reproach myself for that. Anyway guys, the melting point = freezing point there right?
Help me recollect the ttces
I got 3-4
What do you guys reckon on the colour change equilibrium question. I put tf
And the reaction between k+, na+ and water in assertion reason type… I found the second statement to be ludicrously worded. “Pulling the electrons out of h+” i somehow managed to make sense out of it and i marked ttce
Yoir take guys?</p>
<p>Please put up the 15 qns in assertion reason.</p>
<p>Hope you’re right Psych1.
Melting=freezing
K+ reacts with water for form base by accepted electrons from H3O so I believe that was TTCE.
Help me remember the equilibrium question and I can tell you the right answer. When I read it during the test it seemed like both statements were F but I may have misinterpreted it. The second statement about chemical changes ceasing was certainly false though. </p>
<p>Anyone remember any of the answer choices for the question about which equilibrium reaction is not affected by pressure? Pretty sure I got that one wrong. Also, does anyone remember a I, II, III question about a reaction with H2SO4 producing certain amounts of water, SO2, and something else?</p>
<p>Option A for that one. Pressure not affecting equilibrium
How much will 3 misses fetch for 800? The catalyst qn, the equilibrium qn i got them wrong. :(</p>
<p>@psych1 please go back i put up 11 of them (just the q) maybe you can rmr the last 4</p>
<p>Psych1 was that one like X2 + Y2->2XY all gases? I should’ve known that was the answer… </p>
<p>3 misses no omits will give you an 81 raw. Usually an 82 raw score is needed for an 800 but maybe this test was a bit harder so it will have a slightly nicer curve. I’m a humanities guy so I self-studied for this test with Barron’s and I thought it was significantly harder than the practice tests I took in the CB book. I’m guessing I got something like a raw score of 73 which, on a normal day, would be like a 750, but idk about this test.</p>
<p>If it said pulling electrons out of H+, that doesnt even make any sense, since H+ has no electrons…</p>
<p>I’m taking this test in May…what tips/suggestions do you guys have for preparing for it?</p>
<p>Chessy I think it said oxidation by removing electrons to make H+. I’m pretty sure that one was TTCE but feel free to prove otherwise.</p>
<p>Swimmerman, use a review book for sure. It’s that easy. Look through the review books and decide which one has a language that suits your specific learning style and read through it. Then get your hands the the CB Subject test book and do the test in that. Review your answers thoroughly and make sure you understand the general concepts being tested. There is a lot of info on the SAT II, so definitely make sure your studying everything on there before you’re thrown a question about a color indicator that you have never even heard of before (ugh!). The test itself is not that hard although…</p>
<p>DID ANYONE ELSE FEEL LIKE THIS TEST WAS RIDICULOUSLY HARD? I mean, I think I did well enough, especially since chemistry isn’t my best subject, but jeez, this test seemed way harder than the test in the blue book. I got my hands on the 1998 “SAT II” blue book because it had a completely different chemistry practice test and, in my opinion, this test was even harder, and that one had a -7=800 curve!! Can anyone who has taken the test before comment on this? I would really like to know if it was actually that hard, and then maybe it will have a nice curve, or if it’s just me. Thanks, really appreciate it!</p>
<p>Thats certainly wrong, K will never remove any electrons from anything. Potassium is a reducing agent, not an oxidizing agent.</p>
<p>Chessy you’re right and, like I said, chemistry is not my thing. Are we sure the question said pulling the electron out of H+? I guess the correct statement would be donating an electron to H+ to form H2 right? Since you’re a chemistry guru, would you mind answering my question about the difficulty of the test?</p>
<p>Well, I’m quite certain that it said something about K pulling or accepting an electron to from H+. Which is why a red flag went off in my head and I immediately put false. However, maybe I misread it and it said donate or give.
As for test difficulty, I’m no guru, but I took one real practice test and I thought the one in October was fairly difficult. Usually its -3 for 800, but maybe this time I’m expecting -4 maybe.</p>
<p>You are modest chessy, your answers to the questions so far make me think otherwise! If any of you get a chance, could you look through the test below and tell me if it is or is not similar in difficulty. That will help us figure out a curve a bit more easily.</p>
<p><a href=“http://d1w9n6kt3pr4mi.■■■■■■■■■■■■■■/1994%20SAT%20Chemistry.pdf[/url]”>http://d1w9n6kt3pr4mi.■■■■■■■■■■■■■■/1994%20SAT%20Chemistry.pdf</a></p>
<p>Yeah that test is near equal, or just slightly harder than the one we took. That test covered more stuff, but I felt our tests T/F question were much much more difficult. So it pretty much is the same difficulty.</p>
<p>was there a question about the density of ice? of am i imagining things…</p>
<p>There was some T/F with density of ice, I just can’t remember what it was.</p>
<p>ice is less dense than water?</p>
<p>Chessy, ill tell you how it made sense to me
H20 is basically a bond b/n h+ and oh- and electrons are shared b/n the two. So pulling off electrons by k+ from h+ is essentially bond breaking. This also makes sense to me because k+ etc are more active than h+.
I currently have my doubts on tree qns. Worst case scenario, 3 wrong :|</p>
<p>Chessyyour views on the colour change qn in t/f category.</p>
<p>Not sure, need to know the whole question because I am fuzzy at this point.
I believe if it went something like
If there is no color change in a solution then the reaction is at equilibrium BECAUSE at the molecular level all actions ceased, I just put F,F. I remember I didn’t understand what it was asking then, and I still don’t understand it now. I know the last part was certainly wrong.</p>