What to Expect on the CHEM 132 midterm exam

What to Expect on the CHEM 132 midterm exam - What to...

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What to Expect on the CHEM 132 mid-term, scheduled for week of March 29-April 2 The exam is a 10 question multiple choice exercise covering Expts# 1-5, worth 50 pts, or 5 pts per question. There will probably be two questions per experiment, one of which will be the sort of thing you did in the experiment (ie. problem-solving using data provided or analysis of data) and a second requiring demonstration of the principle(s) behind the experiment (ie. the kind of questions asked as post-lab questions where you apply what you learned from the experiment). You will have ~40 minutes to complete it. FYI: It is important for you to recognize that the mid-term and final exams are ways to distinguish between those students who really understand what the point of the experiments performed was and how they relate to material addressed in lecture, and those who don’t. Based solely on lab reports, where many reported answers earn most, if not all, credit because of communal input and/or TA assistance, 90% of students would have the essentially the same grade, despite dramatically different comprehension and mastery of the course content. When finished, you will perform Experiment 7, the complexation titration of zinc chloride to determine its empirical formula. A link to a color depiction of the progress of the titration which will be performed can be found at: http://homepages.ius.edu/DSPURLOC/c121/week13.htm It will be posted on the BB homepage; you should view it before the lab so you know what to expect and therefore will be best able to complete the experiment in the time remaining after the mid-term. Material Likely Covered from each Exercise: Experiment #1: Identifying a Solid by its Density: Demonstration of what data should be graphed to determine density and how it should be graphed Understanding how correct units emerge from properly graphed data. Demonstrating understanding of how many significant figures are allowed in measured data and calculation results using such data Understanding that the slope of the best straight line is determined using points on that line, but NOT points used to determine the straight line. Deciding on an unknown based on determined density
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This note was uploaded on 02/02/2012 for the course CHEM 132 taught by Professor Jones during the Spring '08 term at Maryland.

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What to Expect on the CHEM 132 midterm exam - What to...

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