**Official** 2012 USNCO Chemistry Olympiad Discussion

<p>;[, didnt make it, close though…is it worth trying again as a senior and updating ivieS??</p>

<p>I’m taking it on Thursday.</p>

<p>Those of you who did previous exams for practice, was this one better or worse? Or pretty much the same formula with similar questions? Because I’ve noticed a couple repeating questions when I did all the old exams for practice.</p>

<p>Also, congrats to the people who made it!! :)</p>

<p>When should I expect to get the results if I took the test today? And also if I live in rural South Carolina, should a 50-52 be enough to qualify?</p>

<p>I thought it was harder, and a lot more tricky.</p>

<p>has anyone who took the test in san diego received your score?</p>

<p>Are all local tests the same? Also, is the general consensus that this year’s test was harder than previous years…?</p>

<p>In some ACS sections, a separate test is used. In some cases, more questions are added onto the already-made local section test. (I think…) That’s probably why some people had 90 or 70 questions as opposed to 60.</p>

<p>Are you in LA area ?</p>

<p>How did this year’s test compare with the 2011 local test?</p>

<p>@dreamschool I found out the day I took the test… Not much waiting at all…</p>

<p>I thought the test wasn’t that bad. There’s less trivial knowledge such as colors on this year’s test, so that may be a good or bad thing depending if you know that stuff.</p>

<p>The stoichiometry was easier– there wasn’t a stoich problem I didn’t know how to do. However, there are many evil little tricks you gotta watch out for. Some weird, tricky conceptual questions as well.</p>

<p>lol so much for “NOT discussing” the exam until the contest window is over.</p>

<p>I’m from San Diego, and I took the exam on the 18th of March (Sunday) and found out that I made it on Thursday (the 22nd). I didn’t get my score.</p>

<p>what was the cutoff for san diego?</p>

<p>Woo-hoo, I got nominated (with a score of 65/70!) :)</p>

<p>Sophia7X: haha we have such similar usernames.</p>

<p>I took it on Thursday last week, and I’m still waiting on results. I felt this test was easier than previous ones.</p>

<p>Hmm we can discuss now, right?</p>

<p>Darn I got the secondary alcohol question wrong haha…
There was one question I was tricked up on – the solids formed… like the choices were
is lead a metallic solid, NH4SO4 an ionic, etc. What was the answer to that one?</p>

<p>By the way, does anyone have the answer choices and the wording corresponding to it (e.g. like B) Metallic Solid) because I’m not sure if I misbubbled one of the choices in the early ones…</p>

<p>I don’t remember all of those questions infiniterise; can you post the exact question? I may have had a different test layout.
What about the question that asked which had the lowest vapor pressure…and some of the choices were acetic acid, sodium chloride, sodium sulfate, and something else…
and the one about lowest ionization energy, where the answer choices were potassium cation, bromide, chloride, argon…</p>

<p>Infiniterise, I think the question was asking for which pair was incorrect–which solid didn’t match up with the provided solid type. I’m pretty sure that the answer is D) SiO2 Molecular because it’s actually a covalent network solid.
I don’t recall those problems, COMBOnatorics–maybe we took different tests? Did you take the standard 60-question local test?</p>

<p>Mine was 60 questions. It had different subsections labeled “Laboratory and Descriptive Chemistry,” “stoichiometry and solutions,” etc. that previous tests hadn’t labeled, plus we were given more equations, so it may have been different.</p>