<p>ah!
I thought N2 made sense since it’s practically 2 atoms sharing electrons in a linear geometry, and so I thought it had 180 degree bond angle…</p>
<p>what about the one with the ice question? I remember one of the choice being “freezing point is 0 degree and melting point is 0 degree”</p>
<p>also, what about the one where it asks which chemical equation would not be affected if pressure was added? All of the choices had at least one that existed in gaseous state…</p>
<p>so basically if you have the same number of moles of gas on both sides, the pressure change wont really affect anything (it was the first choice i think it was 2 moles of gas on reactant and 2 moles of gas on product side)</p>
<p>yes, the freezing and melting point of water are both 0 degrees celsius</p>
<p>for the one where they gave the electron configuration was it 2 and 3 i feel like i remember 2 of them working</p>
<p>greatst concentration of H+ ions it was the one with 7 * 10^-4 i think; hydrogen bonding explained one of the questions; na2so4 not just ionic (polyatomic also); k–>K+ oxidation/red; was there any question on 1st order reactions?</p>
<p>@hopeisbeauty. I took this in June. Got definitely 2 wrong. and Got 800. Hope that helps with the curve determining.</p>
<p>Do you think today’s test hard or easy? have enough time to finish or not?
I feel it’s harder than the test in CB blue book, but still can be done on time.</p>
<p>Got a 770 on princeton yesterday, but I scored nowhere close to that today :(</p>
<p>Fairly certain that the answer to the question asking about the temperature of the liquid if some evaporates is that the temperature of <em>the liquid</em> decreases, since the high energy molecules have left the liquid.</p>
<p>does anyone remember exactly how the aspirin question was worded? When I balanced the equation I was sure it was something like C9H10O5… but apparently it’s wrong</p>
<p>My method might be wrong, but I made sure there were equal amounts of atoms of the elements on both sides of the equation, and thus got C9H8O4. Lucky guess.</p>
<p>Ok the things with the colour change is either tf or ff.
second statement is NOT true.
It states all changes cease at molecular level which is wrong
Equilibrium (DYNAMIC) is a condition of equal rates of both forward and backward. Molecular interactions do not cease but balance each other out. That was a good qn.</p>
<p>Lol i knew aspirin is 2 acetoxy benzoic acid. Got it from there.
You might just balance it otherwise</p>
<p>What fappers… CO2 is the linear molecule and H20 is not linear ( It is bent ).</p>
<p>BUT N2 is also linear…</p>
<ul>
<li>CBSE Student</li>
</ul>
<p>Thank you Psych1!!! I was pretty sure that it said “all chemical changes stop” and when I came on this forum I could not figure out why everyone was saying it was true. Didn’t the first part say “if you mix two solutions together and there is no change in color, the system is at equilibrium?” I remember something like that. Pretty sure that would be false as well, since the two solutions may not react at all.</p>
<p>@TrollAunty: according to the barrons book, a linear molecule has 2 atoms attached to a central atom EX: BeF2, CO2 I don’t think N2 would count in this case</p>
<p>@tbradsworth: was that question a tt ce? since the high energy molecules leave the system, the temperature is decreased</p>
<p>does anyone know what score a raw score of 65 would yield?</p>
<p>I’m asking about the raw score of 65 because:
Princeton says 730
Barron’s says 750
Kaplan says 740
REA says 730
Some online converter says 720
Sparknotes says 700 <-what?!
Someone please tell me what the CB book says!
-Hoping for 730+ on this test</p>
<p>For the sample Chem exam of CB blue book, raw score 65= 710, but yesterday’s is much harder than the sample, so it would be higher than 710.</p>
<p>@cool5s Thanks for letting me know!(:</p>
<p>Was it just me or did yesterday’s test have a ridiculous amount of enthalpy/entropy/endo/exothermic questions?</p>