<p>Yeah, I too got 10^-5 for that question. Does anyone know for sure what the answer was to the Le Chatelier’s principle question asking how to shift the reaction to the left? I think I put 1 only…</p>
<p>Also, how hard do you think this test was relative to the practice ones? I found PR far easier and SparkNotes far harder… Except the third test in the 2011-2012 edition of the PR book. That was ridiculously difficult.</p>
<p>can you provide more details on the le chatelier’s principle question? </p>
<p>I think the test was slightly more difficult than pr’s, it tested a couple of topics that I remember reading in barron’s but not pr. yeah I noticed that last pr test was insane too, what was up with that? </p>
<p>it was easier than sparknotes…mainly cause it was less tricky (I hope), but it tested the same content.</p>
<p>and of course, way easier than barrons. I actually finished the real test with time to spare.</p>
<p>what u guys get for the reaction where oxidation reduction doesn’t occur? was it like the double replacement reaction?</p>
<p>There was a uestion about Saturated Solution of NaCl. And then they asked, if you put in even more NaCl what would happen? I choose: The concentration of the solution would not change.</p>
<p>do you remember what the choices were?</p>
<p>no redox was double displacement.</p>
<p>yep, I put no change in concentration for the NaCl one</p>
<p>separating potassium iodide and iron fillings was the answer with water in it?</p>
<p>So what score would 10 wrong be?</p>
<p>what were the options for separation of iron fillings? and what was the exact question?</p>
<p>for that question it was asking how to separate iron filings, KI and sand. I put sieve but i think the write answer was water extraction.</p>
<p>Anyway, in the first section does anybody remember the questions that belonged to the group where questions included: this forms a weak acid when with water, polar covalent molecule which i put CO2, but I feel like I put CO2 down three times…</p>
<p>EDIT: I believe that may have been the question set that had CCl4 and the question asking which liquid doesn’t mix well with water or something. Also was there a question asking for nonpolar covalent molecule cause the answer wouldve been CH4 but i guess i couldve misread it as nonpolar molecule. Doh!</p>
<p>Another question: for the question that was like going from ironoxide to iron that was reduction and going from carbon to carbondioxide was oxidation right?</p>
<p>@Questions96: Yes, I believe you are correct. I put the density would decrease because I wasn’t thinking right. Once the solution has reached saturation, it has reached maximum density. </p>
<p>@hhhenry: Separation of iron filings, sand, and KI was (I think) water extraction because KI is an aqueous in solution. At first I thought that KI being aqueous would disqualify water extraction but I couldn’t think of any better method (other than sieve, so I’m still not sure). </p>
<p>@infrapr0ds: I don’t quite remember that question. Though CO2 does form a weak acid (carbonic acid) in solution, it is not a polar covalent molecule. It has polar bonds but its electron geometry is linear and the dipoles cancel out. </p>
<p>Edit: Oh, the answer was CH4. Also, iron oxide is reduced to iron and carbon is oxidized to carbon dioxide.</p>
<p>The answer was CCl4 I believe…CH4 is a gas not a liquid at RTP! And CCl4 carbon tetrachloride is insoluble in water! Methane can dissolve at a certain higher temperatures!!</p>
<p>What kind of curve do you think there would be on this? How many can you miss and still get an 800? What about a 750?</p>
<p>@Shathdra: I’d suspect -4 raw score would be 800. Standard curve. 750 would probably be -9.</p>
<p>this was my first time, but my friends want to know if its hard or not
was this test a good representation of satIIchem’s difficulty?</p>
<p>IDK about the scoring but I left 9 blank and i got at least 3 wrong
i havent taken AP Chem yet so ill be taking it again next year…ew</p>
<p>Also, for the scoring
Don’t they also take into account how difficult the test was? I heard that if a lot of people didn’t do as well on this SAT Chem than another one, say from last year June, then they will curve this test a little higher?</p>
<p>I’m pretty sure that the curve is predetermined by test makers since they know how difficult each of their tests are.
my logic is like this:
june’s test would have more people that just finished a chem course, and if u haven’t taken a course and take it in Oct, and June, then, it doesnt fairly and accurately show your abilities if the curve is based on the set of people taking that test.</p>
<p>Correct me if I’m wrong</p>