<p>Okay, I had a panic moment where I thought it was ionic.
My teacher told me to remember atomic radii like a snowman lol. Increases downward, and then when you push the snowman over it decreases from left to right XD</p>
<p>Oh geez, 1-2 wrong is nothing. I completely forgot to study those colors and literally flipped when I saw those two questions. Then I proceeded to change my right answers (blue, purple) to wrong answers (green, red). I still kick myself when I think about it. :P</p>
<p>I can’t think of anymore T/F questions D: How do you remember so much from the test, djumper? XD My mind goes blank right after I walk out of the test room.</p>
<p>Yes, the Mg and O2 one was a T/F type question. It was very long, and because the whole question was difficult to remember, I didn’t want to post it here just yet. But you just brought it up, so here goes nothing. :)</p>
<p>It was TTCE, that much I know.</p>
<p>The equation, which wasn’t there by the way, is 2 Mg + O2 → 2MgO.</p>
<p>Statement 1 said, "2.4 grams of Mg and 1.6 grams of oxygen react to form 4 grams of MgO.</p>
<p>Statement 2 said, "2.4 grams of Mg and 1.6 grams of oxygen add up to 4.</p>
<p>It was something like that, but I’m pretty sure it was TTCE.</p>
<p>Another I, II, III type question coming your way! :)</p>
<p>Which of the following must be the same on both sides of an equation?</p>
<p>I. Volume</p>
<p>II. Density</p>
<p>III. Mass</p>
<p>The answer is III only. There are two laws, the conservation of mass and conservation of energy. Volume and density are not related to these. Although I did have a bit of trouble not putting I and III down. Good thing it wasn’t a choice! :)</p>
<p>Oh, I remember that. I thought it was 2.4g Mg and 3.2g O2?</p>
<p>Yep, I put III too! It took me a while because I was nervous putting down only Mass, so I wrote out an equation to see if density/volume were conserved too, but they weren’t.</p>
<p>Yeah, it might have been 2.4 and 3.2, but since you have go by the limiting reagent, you could only use 2.4 and 1.6, and then it was 2.4 and 1.6 in the second statement. The point is, the answer was (most likely) TTCE.</p>
<p>djumper- Oh right, limiting reagent. That must have been the one TTCE I missed then. I balanced it and everything, but for some reason I marked it as wrong because they didn’t mention the leftover O2. Must have been a brain fart haha.</p>
<p>Soccer4kk- Right, fission/fusion. I think the two choices that looked like nuclear reactions were B and E? I forget which was which though.</p>
<p>Hi guys, yeah for the nucleonics equation, the fusion was the one with H+H=HE… What did you guys used to study… I ran out of time and skipped all of the stochiometry Qs</p>
<p>@Nasar, this is my second time taking the Chem SAT. The first time I also skipped a few Stoichiometry questions. This time I was intent on not making the same mistake, so I took 7 practice tests from Sparknotes and Barron’s (I didn’t have time to get Princeton’s and I regret that a bit…).</p>
<p>I used to intensely hate Stoichiometry, but after taking a lot of practice tests, you realize they aren’t terrible. I think the best way is to practice them :)</p>
<p>I only had about 3 weeks too, and I basically took my 7 practices tests the Thursday and Friday before (like three days ago lol). I wish I had more time to study, I wouldn’t have made so many dumb errors.</p>
<p>@Soccer4kk, wow 20 minutes. I had around 10 tops maybe.</p>
<p>I remember a question that asked something like this:
To see the heat of fusion what instruments will be useful
I. Thermometer
Ii. Calorimeter
III. Barometer
IV. Balance</p>
![http://www.sciences-faciles.com/membres/mousme5/images/PressureTemperatureGraph.png[/url]](http://www.sciences-faciles.com/membres/mousme5/images/PressureTemperatureGraph.png%5B/url%5D){kind=link}
