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C142A Ch 1 2011 lecture 1

C142A Ch 1 2011 lecture 1 - Welcome to CHEMISTRY 142A An...

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Unformatted text preview: Welcome to CHEMISTRY 142A!!! An Observational Science An Experimental Science A Laboratory Science (also computational) An Interesting Science A Very Important Science for Humanity A Very "Hard" Science What Happened To The Balloon? It was whimpy and broke! It was fearful of all of these people! Professor Campbell scared it! It got zapped by Voldemort! Hydrogen burns! 2H2 (g) + O2 (g) = 2 H2O (g) + Energy Hydrogen and oxygen are diatomic gases! (H2 and O2) ENERGY was given off!-This is characteristic of an exothermic reaction! Written above is a balanced chemical reaction for what you heard and saw! Water (H2O) can be a gas! And it's stable compared to a mixture of H2 + O2. Dr. Charles T. Campbell (Professor of Chemistry, Chemical Engr. And Physics) BS in Chemical Engineering 1975 PhD in Chemistry 1979 Postdoctoral Research at University of Munich with Prof. Gerhard Ertl (2007 Nobel Prize winner) 5 years at Los Alamos National Lab 25 years as professor, both teaching undergrad courses and running a 10-person research group Editor-in-Chief of Surface Science Today's and future lecture notes will be posted on the course web page, accessible through: http://depts.washington.edu/chem/courses/ Just click the link to Chem 142A and log in w/ UW Net ID. On course web page (to save trees). You MUST read it VERY CAREFULLY! Summary: Syllabus Don't be fooled! We cover these all in much greater depth than in high schools. 6th Example of "laws" we will use in problem solving: 2H2 (g) + O2 (g) ! 2 H2O (g) PV = nRT Keq = [concentration of products] [concentration of reactants] NOTES FOR THIS WEEK: - No labs this week, everyone goes to lab next week. - Lab-specific information will be presented in class on Friday. - Schedule1/Schedule2 assignments won't happen until next week. LECTURES: Attend ALL classes, pay close attention and take notes. I'll help you on this, and you will help me, with "CLICKER" questions. An audience participation system that has been proven to be very effective in lecture-based learning. Syllabus describes how to buy and register your personal clicker. That must be done before Oct. 5 lecture: points start counting then! (You get 50% of the clicker credit for the wrong answer. SELF STUDY (including reading, ALEKS, pre-labs, lab reports): Chemistry is sequential and hierarchical: You must learn and digest today's lecture before you can expect to understand tomorrow's lecture. Requires 2-3 hours self study for each hour of lecture; and one hour for every hour of lab. Find a place that allows for periods of uninterrupted concentration. Read chapter or sections to be covered in the next lecture in advance. Attend and participate in Discussion Sessions. Chemistry Homework!!! " Chemistry is not a spectator sport, you must become involved, and that means that you must do homework!" Linus Pauling (Nobel Prize Winner in Chemistry 1967) I emailed you all instructions on how to get started on ALEKS. They are also posted on the course web page. 9 These are weekly and the 1st one is tomorrow (Thursday). Syllabus- page 11: BAG 260 (M, W, F) 4 Discussion session: 1 per week from first week (Th) ALEKS: 1 Objective per week except Exam weeks. Practice what you will be expected to do on the exams by working many problems. Develop skill at problem analysis / set-up to make solving problems easy. This skill WILL pay off in your future classes at UW!! Talk chemistry with fellow Chem 142 students and TAs/tutors in the study centers. However, always attempt problems on your own first before asking others for help or using them to guide your approach. You must develop your own problem-solving skills and learn how to approach problems yourself! The key is to break the problem down into manageable parts and then organize those parts so that each part gives you the number needed in a later part. Figure this out by working backwards from what is asked, after listing what you know, including potentially relevant laws/equations. How to Measure Your Success 2 midterm exams (50 minutes) 40% ALEKS Objectives and Final Assessment 10% Clicker questions in lectures 5% Discussion session participation 5% Laboratory 15% Final exam (1 hour 50 minutes) 25% -----------------------------------------------------------------Total 100% Some logistical requests (please): 1. Please don't ask me questions before class, since I only have a few minutes before class to set up my computer presentation & demos. 1. Ask me questions after class (or in my office hours), but please wait till I exit the room to ask questions, so we don't hold up the next class's lecturer, who also needs prep time. The Periodic Table of the Elements Most Probable Oxidation State +1 +3 +_4 - 3 H +2 Li Be B C N +1 + 2 Al Si P Na Mg +3 +4 +5 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Fr Ra Ac Rf Db Sg Bh Hs Mt Ds +3 +3 -2 -1 0 He O F Ne S Cl Ar Se Br Kr Te I Xe Po At Rn Ce Pr Nd PmSm Eu Gd Tb Dy Ho Er TmYb Lu Th Pa U Np Pu AmCmBk Cf Es FmMd No Lr 3. Know the structure, reactivity & properties of molecules. 4. Have some lab skills: synthesize, measure, analyze... 5. Predict amounts of stuff needed, produced, in all units ... Which has the highest density? A. B. C. D. E. A can of Diet Pepsi An ice block A can of Pepsi A cork Pure liquid water Chemistry as the Central Science Oceanography Economics Atmospheric Sciences Physics Medicine Governments Chemistry Engineering People Geology Anthropology Biology Astronomy Politics Homework Don't forget to go to your Discussion Session tomorrow (Thursday)! Some TAs call these "Quiz Sections". For Friday: Read syllabus, Appendix 1 & 2 (see details) & Ch. 1 Do the Initial Assessment on ALEKS. For Monday: Get your Clicker and register its ID on Catalyst. Work examples from Ch. 1 notes (web) on your own. Read Ch. 2 (see Reading schedule in Syllabus) Start working toward Objective 1 on ALEKS, due next Friday at 9 PM (8:55 to allow clock error). SUMMARY 1. Syllabus 2. What is Chemistry 142A all about? 3. What is Chemistry and a Chemist? 4. First reading and HW assignments 5. ALEKS ...
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