15 min exam, over the entire content of the AP course, with 90 mins of multiple-choice that makes up 50% of the course, for it to be reduced to the proposed fiasco. The initial and final volume readings of the solution in the buret are shown below. during the ‘exam’, and as a result their answers will not be theirs. It’s not that hard to understand really, it’s a question of not condoning lying and cheating. And so we keep learning physics! Predict whether the experimentally determined mass percent of I- will be greater than, less than, or equal to the amount calculated in part (e). You missed an opportunity to be a leader who could, in the midst of the great uncertainty of this apparently mysterious test, lead them to the best review of all the topics in units 1-7 and maybe even inspire the deeper love for chemistry. If every single student had a unique question, that would not stop them consulting with ANYONE that they wanted to (teacher, tutor, parent, sibling etc.) It is rare a student who places out of our one-semester General Chemistry course. (cii) Justify based on the equation for the overall cell reaction and the information above. Seems to me that you are abandoning your students who still want to take the ap exam. Precisely what is there to stop any child consulting with any number of other people, to collectively work on the ‘exam’? One of the reactions in the investigation requires an equimolar mixture of NO and NO2, which the student produces by using the reaction represented above. Write the net ionic equation for the reaction that occurs to cause the solution to be basic, (a) Calculate the amount of heat needed to purify 1.00mole of Al originally at 298K by melting it. Each of the following alone make the idea that AP Chemistry is being examined in a legitimate manner in 2020, frankly a joke. (a) Identify a Brønsted-Lowry conjugate acid-base pair in the reaction. (ai) Using the data in the table, calculate the cell potential for the zinc-air cell (aii) The electrolyte paste contains OH- ions. I understand that teachers across the nation may be confused as how to teach, but a lot of people are simply doing reviews for Units 1-7 and then teaching 8 and 9 afterward. Condoning an ‘exam’ that has zero integrity is NOT a solution to the problems that we are faced with. Half of the battle with AP Exams is knowing what to expect. (b) Calculate the rate constant, k, for the reaction at 350K. The difference in the mass of the alcohol burner before and after the combustion in this experiment is also 0.55g. It is easy to throw stones and much harder to offer solutions. As an adult, neither should you. The AP Exam will not be perfect. Required fields are marked *, Adrian has over 30 years of high school and early college chemistry teaching experience, in both the UK and the USA. Applications of Thermodynamics, Equilibrium. Explain why the student's claim is accurate (d) Which species, fulminic acid or isocyanic acid is present in higher concentration at equilibrium at 298K? (aii) Based on the spectrum, identify the element. “I will continue to ‘teach’ the AP class to the best of my ability”. They wanted to review but I got them to buy into the fact that omitting thermodynamics would be a mistake. No, of course not. Justify your answer, including a calculation of Eo for the overall reaction (f) Write the balanced net ionic equation for the reaction between I2 and the solution you selected in part (e), Phenol is a weak acid that partially dissociates in water according to the equation above (a) What is the pH of a 0.75 M C6H5OH solution? At the beginning of the academic year I knew EXACTLY what the target was; now I have no idea what that target is, and I have a responsibility to tell the them that I don’t know. I will continue to ‘teach’ the AP class to the best of my ability, but inevitably, I will need to make one thing clear to my own students. I am losing literally thousands of dollars as a result of my stance. 2020 Exam Sample Question 1 (Adapted from: AP ® Computer Science A Course and Exam Description) Directions: SHOW ALL YOUR WORK. For now, colleges are still accepting this exam as legitimate (regardless of the obvious issues). And Trevor Packer is NEVER to be believed. Clearly label which is the acid and which is the base. (d) Based on concepts of atomic structure and periodicity, propose a modification to the student's previous hypothesis to account for the compounds that form between halogens and fluorine, Intermolecular Forces, Enthalpy of Formation. Knowing that the specific heat of the solution is 4.18 J/(g⋅°C), list the specific measurements that are required to be made during the experiment. I cannot, with a clear conscience, deliver than course when I have no idea what the target is. Lol this is kind of long I just realized this. Justify your answer in terms of the interactions between the dyes and the solvent or between the dyes and the paper (b) Which dye is present in the unknown sample? Draw in the species needed to accurately represent the major ionic species remaining in the solution after the reaction has been completed. If I were one of your students I would insist that you cover the material as if the exam has not changed one bit. You talk of “preparing them for the AP Exam.” I teach an advanced course in chemistry – paying respect to the curriculum as described to be sure – but prepare them for even more chemistry in their university experience. More on 2020 AP Exams (and whether to take them) | Sara Su Jones - […] this chemistry teacher’s compelling case for not taking the AP Chemistry Exam—or other AP Exams—this […] Furher reasons to not take the AP chemistry 'exam' in 2020 as a HS senior - Adrian Dingle's Chemistry Pages - […] are already a whole host of reasons NOT to take the AP Chemistry ‘exam’ in 2020. In that regard, I am no longer “preparing them for the AP exam” as I had been up until these changes – that’s impossible, because I no longer know what ‘prepping for the AP exam’ means. For butanoic acid the value of pKa is 4.83. And not everyone will cheat, which is the issue. The system is allowed to reach equilibrium. My students and parents have articulated to me in no uncertain terms how glad they are that AP Exams will go on. Do you agree with the student’s claim? Calculate [KC6H7O2] in the stock solution. Find the 2020 exam schedule, learn tips & tricks, and get your frequently asked questions answered on Fiveable’s Guide to the 2020 AP Exam Updates. I will prepare what I think will be very apt “cheat sheets”, – students are allowed to bring notes. (a) Identify the species that was reduced in the titration reaction. None have been AP students. In 2020, since it will be impossible to prevent ANY student from consulting with a third party during the ‘exam’, the integrity has gone from the whole process. We reviewed as best we could online, and I answered every single question that they had regarding chemistry. Justify your answer. Where I am at, students have to still take a placement diagnostic. (i) If the oxidation of the Fe in the original sample was incomplete so that some of the 7.531g of product was FeO instead of Fe2O3, would the calculated mass percent of Fe in the original sample be higher, lower, or the same as the actual mass percent of Fe? Water molecules are not shown. People SHOULD be outraged. Explain why, in terms of activation energy. My students do not get to either, but I can help them be thankful that the opportunity to have this exam to work toward is still present. Why would you encourage students to not take this test? When I say a ton, I mean a TON. Save my name, email, and website in this browser for the next time I comment. (b) Urea has a high solubility in water, due in part to its ability to form hydrogen bonds. If colleges really cared about having students learn all the content in the first place, then the whole monetized system College Board has created would not even exist.