<p>Hey guys, the ap exam is coming up.
I tried doing an equilibrium problem, and wasn't able to finish 3rd and 4th parts. I did these problems 4 months ago, and don't recall anything. My teacher hasn't reviewed any of stuff and she is now teaching chemical bonding/hybridization. She does have a good website.
Now, I used to be usually good at equilibrium problems, an expert. My teacher had put a bet that I will get a 5 considering how well I was doing in equilibrium.
How are you guys reviewing for the exam??
I am thinking about just doing all the practice problems she has on her website and some from Zumdahl.</p>
<p>my teacher is doing stuff from free response and told me that if i can do free responses from 2003-2006... im good to go.. practice reactions as well.. </p>
<p>i dont seem very stressed out for this class even though im doing bad in the class. i know how to do free response stuff.. but i hope the lab question isnt hard.. i wonder if i could just skip it and still get a 5</p>
<p>im worried about MC portion though.. since we cant use a calculator and it will be all theoretical.</p>
<p>isnt the lab question part of the pick two of the three following questions?</p>
<p>you could skip it mate...</p>
<p>dont u have to do all the questions and u cannot choose.. so essentially i HAVE to do the lab question but i might answer some to be safe.. but overall.. im ok</p>
<p>i dunno what i should do for MC.. is reading the princeton review enough for the MC or is there anything else i need to do....</p>
<p>no, I think they changed the format. you have to do each single problem they have on the test.</p>
<p>really??? Nooooooo
whered you get that info austin?</p>
<p>its from AP Central.. its the 2007 AP Chemistry Format... </p>
<p>its 50% each(MC AND FRQ) .. they will give u 6 probs.. and u have to do ALL 6. </p>
<p>in the reactions.. its only 3 and u have to answer questions on them... not like the 5/8 thing..</p>
<p>wow, shoot. and we have to balance the reactions this year too :-(
and answer a "descriptive" question regarding the reaction</p>
<p>Yeah my chem teacher has been doing this with us all year.</p>
<p>The questions she has us answer range from descriptive (give identifying properties of products like color/smell/etc) or just random questions (what is red/ox agent, or some math based stoichiometry stuff).</p>
<p>AP Chemistry Exam is supposed to have a generous curve. ~65% is what you need for a 5.
I think the MC won't be that hard.
It's the lab question that will eat me alive. And FR in general.</p>
<p>Oh man, I just got some descriptive chem practice and one of the question is about a comlpex (with an amine and some other ligands) ion w/chloride as the anion reacting w/ nitric acid...</p>
<p>I'm assuming the stronger HCl will simply double displace with the HNO3. But then what happens to the NH3 that was a former ligand. Does the complex stay together or does the acid neutralize the NH3?</p>
<p>I think it's bad that I don't know what anything in this thread means.</p>
<p>I have a question about the free response. </p>
<p>So, they don't take off anything if you say wrong information, but include correct answers with it? </p>
<p>On one of the previous year's FR, there was a question about a gas laws lab. It said "what formula(s) do you need to use to calculate the molar mass of the gas"</p>
<p>I wasn't sure, so I just looked at the supplement sheet and wrote down all the gas laws formulas. Do i get all the points for that, even though there was only 2 that were needed?</p>
<p>Probably not...it is looking to see if you know what you are doing, and just copying formulas wouldn't show that.</p>
<p>how should I prepare for MC??
I got 66% on the Mock AP Exam from 2002 that we took in class.
not good!</p>
<p>"Oh man, I just got some descriptive chem practice and one of the question is about a comlpex (with an amine and some other ligands) ion w/chloride as the anion reacting w/ nitric acid...</p>
<p>I'm assuming the stronger HCl will simply double displace with the HNO3. But then what happens to the NH3 that was a former ligand. Does the complex stay together or does the acid neutralize the NH3?"</p>
<p>I'm not sure I understand the question, but if you have a complex ion with ammonia as a ligand, reacting with a strong acid, the acid should donate a hydrogen ion to the ammonia ligand, freeing the ammonias which now become ammonium ion.</p>
<p>austin, a 66% is certainly a 5. Just study a bit more, and you are fine.</p>
<p>Ok, I have the scoring guidelines for the 1999 FR test. </p>
<p>For questions 1-3 (w/ calculator) you can only get positive points for correct answers. AT the bottom, it says you can only get 1 point deducted on EACH question for math errors (with correct setup. obviously, if setup is incorrect, you just don't get the point for that part.)</p>
<p>Also, you can lose only 1 point on EACH question if your sig figs are not +/- 1 digit of the value it should be, or +/-2 for pH values. </p>
<p>For the reactions section, (they are changing this section this year, so I have no clue if its different) each reaction is worth 3 points. You get 1 point for writing the correct reactants, and 2 for correct products. (This year, you have to balance though, so I'm sure there are some scoring changes). If you leave spectator ions in, you lose your 1 point for the reactants, and if you write the complete molecular equation, you can only get 1 point on the reaction. </p>
<p>On the last half, without calculator, there seems to be only positive points for correct answers, and no deductions. By this rubric, i would have gotten the question right just by copying down the formulas from the supplement sheet. </p>
<p>I think this is really helpful, but since the test is changing, this is all going to be different. But, maybe this rubric is on APCentral or something?</p>
<p>Wow, what jerks. I hate CB!!! I found the AP chem "Course Description" FOR 2007 AND 2008, and their example of the free response section is the OLD VERSION?!?!?!?!? What are they doing? Has anyone seen examples of the new FR section?</p>
<p>The only differences between the old FR and the new FR
1) FR is worth 50% instead of 55%
2) No choices for equestions. Questions 1-3 with a calculator are all required. Questions 5-7 without a calculator are all required.
3) Question 4 has 3 required net ionics with balancing and a question. Scoring is 1 point for reactants, 2 points for products, 1 point for balancing, and 1 point for the question.</p>