<p>Do we have to use pen for the free response, or is pencil okay?</p>
<p>I am not sure. I’m pretty sure pencil is okay, but that doesn’t seem to be true if you follow the trend of all other AP tests?</p>
<p>Yea I need to know.</p>
<p>does anyone have a guess as to what frqs will be on the test this year? does anyone know if organic chem is a possibility , since it was on the test last year?</p>
<p>Pencil should be OK. Using a pen for math/sci is just stupid because you WILL make a mistake sometime or write something down wrong and to have to cross stuff out and get ink blobs all over your paper is unnecessary.</p>
<p>I think organic chem will always be on the test but I doubt it will show up as a full question on the free response.</p>
<p>Pencil is fine for calc, so it’s probably fine for chem/physics.</p>
<p>i would say that organic chem is not going to be on the FRQ, just watch me be smitted and it will be on there. organic chem i’ve heard only shows up on the MC, if it shows up on the FRQ, it usually relates to bonding, colligative properties, etc. </p>
<p>so i doubt it’ll be something about identifiying alkanes, alkenes, and what not. so that shouldn’t be a worry. </p>
<p>and does somebody think that the Princeton Review 2008-2009 book is an ACCURATE gauge for the AP test?</p>
<p>I REALLY hope there’s organic on the test… I’m taking a whole course right now in organic :P</p>
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<p>Yes, I’ve read the chapters and done all the practice problems for a 1/3 of the book (1/3 today, 1/3 tomorrow). I skimmed through a released test and I knew I was to do the stuff I had reviewed.</p>
<p>What about the Peterson’s practice tests?</p>
<p>I’m doing Barrons multiple choice and i think its a lot easier than the actual test. Also if anyone has anything on Lewis structures and geometries that would be helpful.</p>
<p>Just in case I believe
50/75…5
35/75…4
25/50…3
anything below…fail</p>
<p>Calcium metal is added to distilled water, why does the pH increase as the reaction proceeds?</p>
<p>^ pH increase because Ca react with water to form Ca(OH)2, which is a base.</p>
<p>Our teacher told us to go to [Shapes</a> of Molecules](<a href=“http://www.chemmybear.com/shapes.html]Shapes”>Shapes of Molecules) for geometries. Kinda useful to see the shapes rotating</p>
<p>How can you distinguish that a solution is strong oxoacid solution?</p>
<p>“distorted tetrahedron”
Our teacher called this seesaw. :p</p>
<p>The more oxygens there are bound to the central atom, the more acidic it is. HBrO4 is stronger the HBrO3</p>
<p>hey guys, im stuck on a couple:</p>
<p>All of the following reactions can be defined as Lewis acid-base reactions except
(a) Al(OH)3(s) + OH–(aq) → Al(OH)4-(aq)
(b) Cl2(g) + H2O(l) → HOCl(aq) + H+(aq) + Cl–(aq)
(c) SnCl4(s) + 2 Cl–(aq) → SnCl6 2–(aq)
(d) NH4+(g) + NH2–(g) → 2 NH3(g)
(e) H+(aq) + NH3(aq) → NH4+(aq)</p>
<p>i know it has something to do w/ accepting electron pairs…idk how to tell</p>
<p>Which of the following species is NOT planar?
(a) CO3 2 –
(b) NO3 –
(c) ClF3
(d) BF3
(e) PCl3</p>
<p>i drew out the lewis stucture for this one…im stuck between choice C and E…they both have lone pairs…idk</p>