Everything you need to know about extra credit in Dr, Laude’s class:A handy handout on extra credit opportunities in Dr. Laude’s class. Listed below are the summaries of the extracredits including what you need to do to earn the points, due dates, etc. Also listed below is the new gradingscheme which uses extra credit points to lower grade cutoffs. The table only applies to those students who turnin ALL five extra credit assignments. If you only turn in three extra credits, you get back 3% of the grading,etc. If you turn in none, you have to use the original cutoffs.Extra Credits handed in to date (4/20):Extra credit number12345Total received (out of 492)43547895320Dr. Laude’s new grade cutoffs (assuming you turn in all five extra credits.)Exemption scale (700 max)Cumulative scale (1000 max)Final Exam scale (300 max)LettergradeOld cutoffNew cutoff(5 EC scores)Old cutoffNew cutoff(5 EC scores)OldcutoffNew cutoff(5 EC scores)A630595900850270255B800750240225C700650210195D600550180165Extra Credit 1.• I want you to teach a science-hater something interesting about chemistry that you have learned in thisclass. The person you teach has to say to you, “gee, I had no idea chemistry was that interesting” whenyou have finished (you can make them say it even if they don’t mean it.). You can choose what youteach but I would recommend that it be something of interest and utility, like the complications ofcooking at high altitude if you happen to be skiing at spring break, or the value of adding salt to water toboil your pasta or why fish explode if you happen to be at the beach, or why South Park was wrong.• Submit the assignment as text in the e-mail (no attachments)• Use the subject: spring break extra credit and send to [email protected].• Include your name and UTEID at the beginning of the e-mail. (If you do not provide your UTEID youwill not receive credit.)• Due Date: April 24 at 11:59 pm.Extra Credit 2.• Think deeply about the reasoning behind why the various colligative properties happen (freezing pointdepression, vapor pressure lowering, boiling point elevation, osmotic pressure.) Then for ONE of theseproperties, explain the theory behind why it happens. Specifically, the argument made is athermodynamic one that involves entropy. So when you write your answer to me, it must include areference to entropy to be correct. It should take you a minimum of three or four sentences to do itproperly in context. The answer to this question is not hard to find. It is in my notes, my course packet,the text book and just about anywhere general chemistry concepts are taught. However I do not simplywant you plagiarizing material. I want you to think through the ideas, put them into your own words,and then write them down.• Submit your answer with the subject: colligative property extra credit to [email protected].• Start the extra credit answer with your name and your UTEID• End the extra credit by mentioning your sources for learning the material (the text, the notes, friends,etc.)• Due Date: April 24 at 11:59 pm.Extra Credit 3.• I will offer extra credit for coming to the undergraduate poster session, finding a poster you like, talkingto the person standing in front of it for 5 minutes, and then going home and e-mailing me about yourexperience. Spend a few sentences telling me who did the poster, why you liked the poster and howneat it is to see that students your own age are doing world class research that you could also be doingwith a little initiative. For those of you who can’t go to the poster session. Some of you can’t go to theevent, so for you, an alternative bonus opportunity is to walk through a science building on campus onthe upper floors, staring at the walls. You will see scads of research posters that are up for your perusal.Just take a look at one of those and email me with the same instructions as above except include thename of the first author on the poster.• Use the subject heading: interesting poster and submit to [email protected]• Starting off with your name and UTEID.• You will have until Sunday, April 24, at 11:59 pm to turn in your response.Extra credit 4.This campus is littered with seminars of a scholarly nature that occur in addition to the normal course lecturesthat are given. Every department will hold literally hundreds of these a year. You will see signs for theseposted everywhere. For example, one of you asked me about how to find such talks while at a help sessionyesterday, and so we took a stroll along the fourth floor of Waggener and on the first four doors we passed, wesaw descriptions of four entirely separate events that were holding multiple scholarly lectures. For you to earnan additional 1% of your grade (up to 10 points on a 1000 point scale), you need to go to one of these talks andcome home and write me about it. Most of these talks are about 50 minutes in length with a question answerperiod and occur in the late afternoon. But they occur non stop and should become part of your academicexperience as you evolve into an intellectual force on campus. Some of you questioned whether concerts orplays might be considered. I realize I have to draw the line on this. You must establish a relevance to youracademic interests. So if you are a pre-med history major I can see going to a talk about breast cancer cures orwhy Rome fell, but I am not sure you can justify the ballet. But really, I leave it to you to make the justificationas part of your explanation of the experience.• Use the subject heading “fascinating seminar”• Starting off with your name and UTEID,• Take a few sentences to1) tell me who did the seminar,2) tell me why you liked the seminar and how it related to your own academic interests3) tell me how excited you are to have found a way to spend later afternoons stimulatingyour mind AND eating free donuts or cookies.You will have until Sunday, April 31, at 11:59 pm to turn in your response.Extra Credit 5.Salt is not infinitely soluble in water, yet in defining it as a strong electrolyte, we say it “dissociatescompletely”, suggesting a K value much larger than it actually is. I want you to determine the actual Ksp forNaCl Na+ + Cl- experimentally. If you have access to salt (borrow some from the dining hall), water, amicrowave, a measuring cup, and a way to measure mass of
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