Chemistry

Chemistry - Dr. Cowan 2085 EL 292‐2703 Welcome to...

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Unformatted text preview: Dr. Cowan 2085 EL 292‐2703 Welcome to Chemistry 121 Spring Quarter 2010 cowan@chemistry.ohio‐state.edu Home Page: www.chemistry.ohio‐state.edu/~cowan TR 1:00 – 2:18 PM MP 1000 Carmen Website: carmen.osu.edu Lab Supervisor: Brittany Poast, 247‐4560 bpoast@chemistry.ohio‐state.edu Textbook: Chemistry, The Central Science (Eleventh Edition), by Brown, LeMay, Bursten and Murphy Lab Manual: General Chemistry Laboratory Experiments, Volume 1 (2009‐10), by Casey and Tatz Lab Notebook: Student Lab Notebook, Hayden‐McNeil Publishing, Inc. Prerequisite: One unit of high school chemistry and eligibility to enroll in Math 150. Table of Contents Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Schedule of Assignments / Exam Information Grading / Quizzes / Exams / Office Hours / Learning Resource Center Laboratory Overview / Safety / Videos / “What’s Due in Lab” / Pre‐lab Assignments Laboratory Notebook / Laboratory Reports What to do if you Miss a Lab / Lab Assignments Standards of Academic Conduct Chemistry 121 is a Physical Science course in the Natural Science category of the GEC, which has these goals and objectives: Goals: Natural Science coursework fosters students’ understanding of the principles, theories and methods of modern science, the relationship between science and technology, the implications of scientific discoveries and the potential of science and technology to address problems of the contemporary world. Learning Objectives: 1. Students understand the basic facts, principles, theories and methods of modern science. 2. Students learn key events in the history of science. 3. Students provide examples of the inter‐dependence of scientific and technological developments. 4. Students discuss social and philosophical implications of scientific discoveries and understand the potential of science and technology to address problems of the contemporary world. Student Responsibility: Each student receives this information in the first lecture section. It is your responsibility to read this material and be familiar with the course content, procedures, and grading. You are also responsible for any announcements concerning course procedures which are made in class. (If you are absent, you are expected to get notes, announcements, etc. from another student in the class.) Disability Services (ODS): All students with documented disabilities, who need accommodations, should see the instructor privately. If your disability requires materials in alternative formats, please contact the Office for Disability Services (ODS), 150 Pomerene Hall 292‐3307. Calculator: For quizzes and examinations, the use of a calculator is restricted to a TI‐30 (any, except XS Multi view), Sharp EL‐509 (any), Sharp EL‐531(any) or Casio FX‐250 (any). No other calculators are permitted. See http://undergrad‐ed.chemistry.ohio‐state.edu/calculators/ IF YOU ARE UNABLE TO ATTEND THE FIRST LAB SESSION, NOTIFY THE UNDERGRADUATE OFFICE (100 CE) IMMEDIATELY. You could lose your seat in lab and in the course! Revised 3/05/2010 Schedule of Assignments Week of Chpt Lecture Topic Quiz Laboratory M W/F Mar. 29 Introduction, Units of Measurement, Significant Figures, Dimensional Analysis, Periodic Table M W/F 1 ‐‐‐ ‐‐‐ 1, Ckin 1, Ckin 2, 3 I I 2 2 Apr. 5 Formulas, Naming Inorganic Compounds, Chemical Equations & Reactions Apr. 12 Formula Weights, The Mole, Empirical Formulas, Reaction Stoichiometry 3 II II 3 3 Apr. 19 Electrolytes & Nonelectrolytes, Ionic Equations, Oxidation Numbers, Acid‐Base & Redox Reactions, Concentration Units, Solution Stoichiometry 4 III III 4 4 Apr. 26 Electromagnetic Radiation, The Bohr Atom, Many Electron Atoms, Electronic Configurations 6 ‐‐‐ ‐‐‐ 6 6 May 3 Electron Configuration & Periodic Table, The Periodic Table, Effective Nuclear Charge, Periodic Trends 6, 7 IV IV 5 5 May 10 Selected Metals & Non‐Metals, Lewis Symbols, Ionic & Covalent Bonding, 7, 8 Polarity & Electronegativity, Lewis Structures V V 7 7 May 17 Exceptions to the Octet Rule, Strength of Covalent Bonds, Molecular Shapes, VSEPR Model, Molecular Polarity Geometry 9 ‐‐‐ ‐‐‐ 9, FCO 8 May 24 Hybrid Orbitals, Multiple Bonds, Molecular Orbital Theory, Energy & Enthalpy 9, 5 VI VI 10 9, FCO 5 ‐‐* ‐‐‐ ‐‐‐ 10 May Thermochemical Equations, Calorimetry, Hess’s Law, Enthalpies of 31* Formation * May 31st is a University holiday. No classes will be held. University offices are closed. ** Ckin = Check‐in. FCO = Finish, Check‐Out. x = lab closed. Lab Reports for Expts. 1, 2, 3, 4, & 6 will not be accepted after Friday, May, 21st. (See Laboratory Reports.) All other Lab Reports are due no later than 4:30 PM, Friday, June 4th. (See Laboratory Reports.) Requirements in this syllabus (assignments, due dates, etc.) may ONLY be altered by Dr. Cowan or Brittany Poast. Exam Information First Midterm Examination ‐ Monday, April 26th, 6:30 – 7:48 PM Second Midterm Examination ‐ Monday, May 17th, 6:30 – 7:48 PM Final Examination ‐ Wednesday, June 9th, 11:30 – 1:18 PM Table of Contents pg. 2 Academic Misconduct: Any material submitted in General Chemistry must represent your own work. Apparent violations of this standard will be referred to the University Committee of Academic Misconduct (COAM) as required by Faculty Rules. Please read the attached statement on Standards of Academic Conduct carefully. (Page 7) Grading: Your performance in the course will be evaluated on the basis of total points earned for the entire quarter. There is NO extra credit. The distribution of points is as follows: Quizzes Laboratory Midterm I Midterm II Final 150 200 175 175 300 ◄ A minimum of 50% of the total lab points are required to pass the course. Total 1000 pts Mandatory Quizzes: There are two mandatory quizzes to be taken on Carmen. https://carmen.osu.edu. One quiz deals with Academic Misconduct and the other with the Syllabus. Unless you receive perfect scores on both quizzes, you will not receive a passing grade in this course. You MUST complete the quizzes before the end of the second full week of the quarter or you will receive an E for the quarter. Quizzes: Will be given in recitation in the weeks indicated on the second page of the syllabus. There are NO make‐up quizzes but you are allowed to miss one quiz without receiving a penalty or needing permission from your instructor. If you take all of the quizzes, your lowest quiz score will be dropped. ALWAYS SHOW YOUR WORK ON QUIZZES to receive full credit. Bring your approved calculator to quizzes and exams. Calculator covers must be removed and put away. Midterm Exams: These exams are given only at the times shown on the Schedule of Assignments. Make‐ up exams will be given only in the last week of regularly scheduled classes for medical reasons (documented) or a preapproved university conflict. Exams are a scheduled part of this course and attendance is required (exam location is based on lab section). Students with University conflicts should consult the lecturer. Answers will be posted. Final Exam: The final exam must be taken at the University scheduled time. OSU ID cards will be collected at the final exam. Final exams will not be returned. Medical Insurance Coverage: Due to the potentially dangerous nature of laboratory work, you are reminded to maintain medical insurance coverage through OSU health service or a private agency when enrolling in Chemistry laboratory courses. Office Hours: Dr. Cowan will be available in his office, 2085 EL, on Monday’s noon – 1.00 pm and Thursdays 2.30 – 3.30 pm, and by appointment. Additional Assistance: 1. Extra copies of course handouts are available in the General Chemistry Office, 100 Celeste Lab. 2. Undergraduate chemistry web site: https://web.chemistry.ohio‐state.edu/undergraduate Learning Resource Center (TA Aid Room) ‐ 160 CE: The Center is open Monday through Friday during posted hours (over 40 hrs per week). Teaching assistants (TA’s) spend time each week in the Center to provide contact time with their students and to answer specific questions about their course as well as general questions in any course. A schedule is posted outside the door which lists the time each TA is available as well as their course assignment. Stop by when convenient to your schedule and take advantage of the resources; no appointment necessary. TA’s wear a name tag indicating their course assignment. There are also two side rooms, 160A and 160C where TA's may be present. The Center has limited space and is not designed as a library or study hall, but as a place where students can come for individual help and instruction. Table of Contents pg. 3 Laboratory Overview: Consists of one 3‐hour session per week; YOU MAY WORK IN THE LABORATORY ONLY DURING YOUR SCHEDULED LABORATORY PERIOD! Any time remaining in a lab period and the last lab (checkout) period can be used to complete a previous experiment ‐ discuss this with your TA first. A minimum of 50% of the total lab points are necessary for a passing grade in the course. Laboratory Safety Requirements: Students are required to read, understand, and implement the safety precautions indicated in the laboratory manual and laboratory handouts. The precautions are summarized on a safety form which must be signed by all students during their first laboratory period. The following are selected instructions from the safety form: 1. You must wear Department‐authorized ANSI code goggles in the laboratory. Goggles will be issued during check‐in. After the first free pair, goggles may be borrowed, if available, from CE 231 or 331; otherwise, they must be purchased from CE 180. Not wearing goggles will result in the loss of 10% of the grade for the experiment. For any subsequent violation, an additional loss of 10% of the grade will result. Continued violations may result in dismissal from the course. The wearing of contact lenses is NOT recommended. 2. Each student must adequate clothing to reduce the possibility of injury from chemicals or broken glass. Students who wear sandals or shorts will be sent home – NO make‐up time will be provided. 3. Familiarize yourself with the location of the fire blanket, fire extinguisher, and eye wash in the laboratory. 4. Promptly report all accidents, no matter how small, to your lab instructor. 5. Your work area should be cleaned before you leave lab. After putting your equipment away, wipe down your work area with a wet sponge or towel. This ensures that you, and other students who use the space, will not be harmed by chemicals left on the desktop. Also clean up spills in the balance room by brushing chemicals into a weighing dish. 6. No unauthorized experiments are allowed. No chemicals may be removed from the lab. Laboratory Video Instruction: Laboratory videos are shown at the start of the laboratory. Students must view the entire video prior to starting the experiment. Students who are late for laboratory will have to view the video on the computers in the Learning Resource Center ‐ 160 CE. You will need to print a form, using the UniPrint station in 160A CE, to be given to your TA in lab. (This requires your BuckID.) The videos are designed to supplement the instructions in the laboratory manual. Students will be better prepared to assimilate the video instructions if they have read the laboratory manual prior to the laboratory. The videos are short and there is insufficient time to take detailed notes if you are not already familiar with the experiment. You are encouraged to view the tapes at your own pace either before or after laboratory. The lab videos are available online at http://app.chemistry.ohio‐state.edu/chemflashplayer/ What’s Due When For Lab ‐ The Quick Version: Start of Lab: Pre‐Lab Assignment for current experiment Notebook Prep for current experiment Lab Report for previously completed experiment(s) End of Lab: See further explanation of these items in the topics listed below. Notebook Copies signed & collected by TA Pre‐Laboratory Assignments: Pre‐lab assignments are part of your lab grade. Assigned questions can be found on the Lab Assignment Table below. They are due at the beginning of the lab period the experiment is started. Pre‐labs from the lab manual should be written on a separate piece of paper, except for Experiment 2 which can be torn out of the lab manual. Pre‐labs submitted after the lab is started will receive zero credit. (NOTE: The first experiment has a pre‐lab assignment due at the end of the period.) Table of Contents pg. 4 Laboratory Notebooks: The laboratory notebook is your official record of everything that you do in lab. If it’s not written in your notebook, it didn’t happen. As such, take care to keep a thorough and accurate notebook during lab. Record procedures followed, observations made and data collected, calculations, and results. The notebook should be sufficiently neat and organized so that another person can follow what you did. At the end of each lab, sign your data pages and submit the copies to your lab instructor in order to receive credit for the lab. Follow this checklist for your notebook: Before lab: (Prep) During lab: At home: Experiment number and title Purpose (one or two sentences) Procedure (reference to pages inlab manual and outline of procedure) Data Table (either a replica of your report form or blanks for data throughout the procedure) All numerical data (must include label and units) ‐‐‐ Recorded in Notebook first Other observations ‐‐‐ Recorded in Notebook first, Not the lab manual Sign & date pages, submit copies to TA. Calculations (using your own data) Chemical equations Results The laboratory notebook will be graded as the experiment is being performed. Calculations, chemical equations and results will usually not be complete when the notebook is graded. Your TA will sign your work, write down your grade, and tell you how your notebook could be improved. The copy will be collected each lab period. For info & examples of lab notebooks: http://undergrad‐ed.chemistry.ohio‐state.edu/labnotebook/index.html Laboratory Reports: Lab Reports are the culmination of your laboratory experiment. The data and observations recorded in your Notebook are transferred to your Report Form to be presented in your report. You should write in the third person, as is common for scientific papers. Be sure to include all components listed below in your reports to ensure maximum points. There are also significant points awarded for accuracy of the lab results. Report Types: Short & Full (Report Type is indicated on Lab Assignment Table below.) Short: Report Form torn out of lab manual (Photocopies are not acceptable.) Sample calculations (using your own data) Full: Cover page containing experiment number and title, student's name, date, TA name Purpose Procedure ‐ reference to lab manual is sufficient (note any changes you made) Report Form torn out of lab manual (Photocopies are not acceptable) Sample Calculations – indicated on Report Form in italics (using your own data) Graphs (if applicable) Answers to assigned Report Questions Conclusion ‐ includes results and error analysis Laboratory Reports are normally due at the beginning of the lab session ONE week after the completion of the experiment. Late reports (even if on the same day) will be penalized 10% per day. Submit late reports to 100 CE; you must notify your TA by email within one day after submission. See the Course Schedule for Lab Report cut‐off dates. NO credit will be given after 2 weeks or past the due dates shown on the Course Schedule. If you do not check‐out, you will receive a zero for your last lab report. Graded reports should be returned a week after submission ‐ notify your lecturer if they are not. For info & examples of lab reports: http://undergrad‐ed.chemistry.ohio‐state.edu/labreports/index.html Table of Contents pg. 5 What To Do If You Miss A Lab: If you miss the FIRST lab, GO TO 100 CE IMMEDIATELY to claim your seat in the course!! If you miss any other lab, email your TA as soon as possible. Turn any lab reports and pre‐labs that were due to 100 CE as soon as possible – 10% late penalty per day (including the day the report is due). Watch the lab video in CE 160 and get the printout from 160A CE before your next lab. Come prepared to your next lab session with the notebook prep for the experiment you missed, as well as the notebook prep & pre‐lab for the current experiment. You will need to make up the missed experiment during the remaining lab period. No extra time is given to make up missed experiments. Lab Assignments: Expt # Title Pre‐lab Assignment Report Questions Lab Points* Report Type Video Length 1 Measurements of Mass and Volume: Density Page 3: 1a, 1c Submit at end of lab period. Post‐Lab Notebook Exercise** 80 Short 06:08 & 10:41 2 Separation of the Components of a Mixture Page 13‐14: 1***, 2c, 2f, 3 Page 18: 1, 3 110 Full None 3 Determining an Empirical Formula Page 21: 2, 4, 7 None 80 Short 09:50 4 Development of an Equation Page 29‐30: 1, 2, 4, 6, 8 Page 38: 3, 4, 5, 7 110 Full 14:06 6 Preparation of Common Alum from Scrap Aluminum Page 48: 1a, 1b, 1c, 1d, 2a, 2b None 80 Short None 5 Gravimetric Determination of Sulfate; Semimicro Scale Page 40: 1, 2 Page 46: 1a, 1c, 1d, 4 110 Full None 7 Reactions and Qualitative Determination of Selected Metal Ions Page 58: 1b, 1c, 1d, 2b, 3a Page 64: 1, 2, 5, 7 See Page 60 for extra report requirements. 110 Full (see page 60) 12:36 8 An Acid‐Base Titration: Determining Page 67: 1b, 3, Molecular Weight 4a, 4b None 80 Short 11:26 9 Emission Spectra Page 76: 1, 3, 4 Page 82: 2, 4 80 Full 05:01 Page 93: 1, 3 Page 102: 1, 2a, 2b & 2c (only do assigned set) 100 Special+ Due in lab 10 Molecular Geometry and Bonding None * ** *** The laboratory points are factored by 200/940 to give 200 course points. Expt 1 Post‐Lab Notebook Exercise: http://undergrad‐ed.chemistry.ohio‐state.edu/labnotebook/index.html Follow the instructions on the website to complete the assignment. Online access to the CRC Handbook to complete Question 1: http://hbcpnetbase.com.proxy.lib.ohio‐state.edu + Experiment 10 is a short report type with report questions. It is due by the end of the lab period. Table of Contents pg. 6 STANDARDS OF ACADEMIC CONDUCT IN GENERAL CHEMISTRY Any material submitted in General Chemistry must represent your own work. Violations of this standard will be referred to the University Committee of Academic Misconduct (COAM) as required by Faculty Rules. If you need assistance, check with the staff of the Department of Chemistry. Group efforts by students, use of another student’s pre‐laboratory or laboratory material, or assistance from individuals who already have taken the course may place you in jeopardy of violation of the standards of General Chemistry. Possession of another student’s lab report(s) will raise immediate concerns about academic misconduct. Plagiarism or the submission of work based on old material is considered to be academic misconduct no matter how small the infraction. Identical answers indicate copying or unacceptable group efforts ‐ always answer questions in your own unique words. Individuals retaking the course must complete all work for the course during the current quarter and may not submit any parts of pre‐labs or lab work or reports performed in a previous quarter (see item #6 in “Ten Suggestions for Preserving Academic Integrity”, http://oaa.osu.edu/coam/ten‐ suggestions.html). Pre‐laboratory exercises are designed to make you prepare for the laboratory. Copying answers from other individuals or from old copies of the exercises does not prepare you properly for the laboratory. Evidence of copying or "working together" will be submitted to COAM. The minimum penalty recommended by the Department of Chemistry will be a zero for the pre‐laboratory exercise and the accompanying experiment. Laboratory work is the essence of the science of Chemistry; therefore laboratory work in General Chemistry is to be an individual effort. You will have your own locker/work space and you are expected to perform all parts of the experiments with your own equipment, chemicals and unknowns. The accumulation of data, calculations derived from that data and any conclusions or answers to questions associated with that experiment are to be your own work. Laboratory data may not be altered or "made up". All laboratory work must be done in your assigned laboratory room during your scheduled time period and be supervised by your assigned teaching assistant. You are required to have the data sheet/notebook signed by your teaching assistant during lab. Some courses require the submission of carbon copies of the lab notebook every lab period. Violations will be prosecuted with the minimum recommended penalty of a zero for the entire laboratory portion of the course. If a minimum grade in laboratory is required as stated on the syllabus of the course, the zero can result in an E for the entire course. Copying, use of "crib" material or use of stored constants and formulas in calculators on quizzes, midterm examinations or the final exam, no matter how small the violation, is regarded as a severe violation of academic standards. The Department of Chemistry will recommend, as the minimum penalty, a grade of E for the course for any such violations. The use of improper calculators (those NOT listed on the syllabus as approved) may constitute academic misconduct. The staff will inspect calculators used in exams. During exams, students are seated with their lab section to facilitate proctoring of the exam. Students supplying materials for others to "look at" may be charged with academic misconduct. Never allow another student access to your pre‐laboratory exercises or lab reports even after completion of the course. You should not assist others in violations of academic standards. "I didn't know that the person was going to copy my work" is not an acceptable excuse. Table of Contents pg. 7 ...
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