December 2009 SAT Chemistry Test

<p>I got 5 TTCE’s btw.</p>

<p>did anybody put the last instrument for something for those lab equipment questions in the beginning?</p>

<p>Yeah that was for the separation of gases.</p>

<p>Dang it. I messed up on the last question. I think I put sulfur. Overall, not bad I thought it was pretty easy. I got about 4-5 (T T CE’s) also.</p>

<p>^ What was the last question? Explain please :)</p>

<p>something about an element with the highest first IE. I’m pretty sure I got it wrong.</p>

<p>^ wasnt argon the one with the highest b/c its a noble gas ?</p>

<p>Nah it was chlorine.</p>

<p>and for the true false, what did u guys get for acetic acid and water and which one is more acidic because of more hydrogen atoms? I put T T but now im thinking it was T,T,CE ?</p>

<p>how would it be chlorine? wouldnt a noble gas be less likely to lose its outer electron?</p>

<p>I put argon.</p>

<p>I’m already seeing a few I got wrong. Whoops :/</p>

<p>pretty sure its argon.</p>

<p>also for the acetic acid one, i put TT, it does have more hydrogen atoms but that doesnt explain why it’s a stronger acid
stronger acid means dissociates more, which it doesn’t say.</p>

<p>How is it argon? Why would Argon want to gain an electron??? It’s valence level is full…their electronegativity values are low. You can look it up if you don’t believe me. Chlorine is right under the most electronegative element (fluorine). Trust me guys, its Chlorine.</p>

<p>Because the question is not about electronegativity. It’s talking about first ionization energy.
Argon definitely has a higher first ionization energy than chlorine.</p>

<p>If you don’t believe me, maybe you’ll believe wiki. [Ionization</a> energy - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/Ionization_energy]Ionization”>Ionization energy - Wikipedia)</p>

<p>i definately agree. its argon.</p>

<p>Oh was it IE? If that’s the case I read the question wrong dammit. Good catch kzhi2u.</p>

<p>in pr da highest ionization energy is written for flourine not any NOBLE Gas
just goggle up and chk ioniztion energy periodic table u will get da answer it was cl not Ar :smiley: </p>

<p>Btw as i think there were 3 CE ?? how many u guys got ? ?</p>

<p>no. noble gasses have a higher first ionization energy. </p>

<p>F is the most electronegative. but Cl ionizes easier than Ar</p>

<p>in barrons all noble gases have the highest ionization energy. Its also a matter of common sense.
and here. i googled it.
[The</a> elements of the periodic table sorted by ionization energy](<a href=“http://www.lenntech.com/periodic-chart-elements/ionization-energy.htm]The”>The elements of the periodic table sorted by ionization energy)
argon defs has a higher ionization energy than chlorine.</p>

<p>What did you guys choose for the TF question of </p>

<p>‘A solution might be less saturated when temperature increase’ because ‘the solubility of the solute usually increase when temperature increases’</p>

<p>I chose TF.</p>

<p>How about the question about the solution with lowest electrical conduction? I chose methanol among Ba(OH)2, HNO3, acetic acid and another option.</p>

<p>Wasn’t there a typo on the question asking you which solution has a H+ concentration of 1 x 10^-1 when all the solutions have 0.10 M (10^-2)? I chose the HNO3 solution.</p>