<p>So we have no way of knowing how close we were to the next point? Is there any way to find out?</p>
<p>It only says AP CHEMISTRY: # ?</p>
<p>What will be the point range for a 5 this year? will it be a larger range since it was difficult</p>
<p>@pinkrose22: No, we will never know anything other than our final score.</p>
<p>And it’s hard to predict the point range, especially because there was the change in scoring this year.</p>
<p>In 4b, what was the lewis base?</p>
<p>For 5d, do you think they would take HN2H4 instead of N2H5?</p>
<p>pinkrose: yeah they send you one paper with just the number you got out of 5. if youre taking multiple exams it will show the name and the number next to it taht’s it. you can pay for them to grade yours differently and stuff but im not sure if you get a more comprehensive score report that way.</p>
<p>and diehard: i found a pdf on the collegeboard website (which ill have to look to find again) but it said that 100-150 was a 5. everyone here seems to think that since the guessing penalty was removed then the score ranges will be changed, but the ranges given on their site were for when each mc was multiplied by 1 and no points were subtracted for wrong answers, which leads me to believe that what the pdf says is accurate. also, i am certain (and so is my chem teacher) that the ranges are predetermined. there is no such thing as a larger or smaller curve than previous years because these tests are standardized which means that everything is the same and set beforehand and it doesnt matter whether people think it was hard or not. and even though i doubt i got a 5 i didnt think the test was hard at all… like i knew what they were asking of us i just didnt answer everything correctly because i forgot stuff from throughout the year. i don’t think that they were that exiging (can you say that in english??) of us on the frqs idk thats just me.</p>
<p>@imagodei
Do you know when collegeboard puts up the solution/scoring guidelines for the test?</p>
<p>Pinkrose: pretty sure the lewis base was Cl- cuz it has extra electrons to donate</p>
<p>For 6b in addition to saying that temperature and Kinetic Energy are directly related, I said that the temp increase leads to more molecules escaping to the gaseous state, hence more pressure.</p>
<p>Would this probably warrant a 5?</p>
<p>MC: 66-68 of 75
FR1: Missed the “is it a buffer?” question
FR2: Pretty sure everything is right
FR3: Missed the 44 kJ/mol question
FR4: Missed the coordinate complex products/balancing/question
FR5: Wrong diagram and molecular shape (but said it wasn’t on the same plane), said it was a true statement
FR6: Everything right</p>
<p>Princeton Review and some of the FR questions in more recent years were way easier than was what presented this time around.</p>
<p>So every five or so years, the College Board releases exams in each subject. Below is a link for ADJUSTED SCORING for the 2008 released chemistry exam. This means that, since the 2008 exam has been released and teachers need to figure out how to assign scores to their students if they give them this exam, this is the scoring method they should use because this is the scoring method that will be used for the 2011 exam. This is what I have been saying all along. Take a look:</p>
<p><a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<p>Btw you can ignore the second page because the percentages they give is for the particular questions asked on the 2008 exam… those percentages refer to the number of people who got a certain amount of questions right out of the total number of people who took the test or whatever.</p>
<p>And HBSoph… based on what you’re saying about your MC and FRQ, I would say you got a solid 5. You can plug in numbers to the link posted above to see.</p>
<p>For FRQ1, was it a buffer?</p>
<p>pinkrose: i didnt know how to do that one but i have heard people on here that have said yes.</p>
<p>I just guessed and stated that it was a buffer because it maintained the pH (definition of buffer). I made no reference to the calculations/data nor whatsoever because it was a guess. Will I get points docked off for this, even though it was correct?</p>
<p>Also, does someone want to compiled an official list of accepted answers for the test? That would be nice.</p>
<p>Thanks, ibis. A lot of people were freaking out after the FR because they thought the MC was relatively easy. Some were telling me they just doodled on parts to which they couldn’t fathom a response. Like most students in my class, I skipped regular chemistry and went straight from biology to AP Chemistry, but I made the top 11 for the ACS Regional assessment. I just don’t want all of my effort to go down as a 4, considering I got a 5 on all practice exams.</p>
<p>Okay, so everyone fill in this list with what you got so we can have a somewhat organized list of answers:</p>
<p>1
a
b
i)
ii)
c
i)
ii)
d
i) Yes
ii)
2
a
i)
ii)
iii)
iv) NahCO3
b 0.00376moles
c
3
a
b
c
d
e 1.23
f
i) 1.86
ii) 300
gFuel cells based on butane release Carbon Dioxide gas which is detrimental to the Earth, potentially aggravate global warming, etc. Also, butane cells require the use of Butane, which is a highly flammable, combustible hydrocarbon. It can thus be dangerous to use, etc. Hydrogen cell simply gives off water and is much safer and environmentally friendly.
4
a
i)
ii) 100 mL
b
i) Cu + 2Ag+ –> Cu2+ + Ag
ii) Cl
c
i)
ii) Silver flakes start to attach to copper wire
5
a
b No
c
d
e Red-Ox
f Positive
g False
6
a Equal
bAverage kinetic energy of molecules, and therefore average speed of the gas molecules, is directly related to absolute temperature. When you increase temperature, you are increasing average kinetic energy and average speed. More gas molecules are moving at faster speeds in random chaotic motion and their collisions are elastic. The total force in the container thus increases while the area is the same. Thus, the pressure increases.
c
i) Zero
ii) Rate = k
iii) -.0000040 M/sec = k</p>
<p>d .8 atm</p>
<p>pinkrose: also Keasbey Nights (the person who put the links to the questions on this website even before they were listed under the frqs on collegeboard) said that he was going to sit down and compile all his answers to the frqs for chem when he got the chance after his calc bc exam… and if he is taking chem and calc bc(god bless his soul) then i can bet he’s really smart. so it will be good to compare with him when he gets around to doing that.</p>
<p>I just put in some of te answers most of us agreed on, im sure he can add on, feel free to add your answers to the list too :D</p>
<p>how do i do that if i can only edit my own posts.</p>
<p>and for the rate 4.0 x 10^6, did it have to be negative? I know the line was downward sloping but i completely forgot to put the negative sign danggggg</p>