Department
of Chemistry
& Biochemistry
CHM152L-General Chemistry II Syllabus
General Information: Offered Fall, Spring, and Summer
1-hour of Laboratory Science credit
Instructors: All faculty with appointments in the chemistry department, are eligible to supervise CHM152L sections. All sections will utilize graduate and/or undergraduate teaching assistants.
Distribution Block: If taken with CHM152, student can receive 4 hours of lab science credit.
Course Prerequisites/Co-requisite:
CHM151, CHM151L, CHM152
Course Description:
CHM152L is the second semester of a 1-year sequence appropriate for pre-professional, science, and engineering majors. Principles, practices, and applications of contemporary laboratory chemistry will be addressed. As a liberal studies course, CHM152L addresses the essential skills of scientific inquiry and quantitative reasoning, and the theme of environmental consciousness. Students will have hands-on experience using the scientific method to describe, quantify, and solve problems of a chemical nature, including several chemical processes that have a direct impact on the environment (such as acid/base and oxidation/reduction reactions).
Course Objectives:
Students will be able to:
1. Demonstrate basic laboratory skills. (Scientific Inquiry)
2. Describe and demonstrate safe laboratory practice. (Scientific Inquiry)
3. Utilize scientific notation and dimensional analysis to solve problems in calorimetry, kinetics, acid/base, and redox reactions. (Quantitative Reasoning)
4. Predict, analyze and experimentally test reaction enthalpies, chemical kinetics, and equilibrium constants. (Environmental Consciousness, Quantitative Reasoning, Scientific Inquiry)
5. Determine the numerical value of chemical concentrations. (Quantitative Reasoning)
6. Predict, analyze and experimentally test the products of oxidation/reduction and electrochemical reactions. (Environmental Consciousness, Quantitative Reasoning, Scientific Inquiry)
Course Structure and Approach:
CHM152L will address chemistry - the science of change, through hands-on laboratory exercises. Using standard laboratory practice and equipment, students will measure, quantify, and describe chemical properties and identify chemical unknowns based on the results of their measurements.
Course Outline:
I. Synthesis of a Complex Iron Salt
II. Enthalpy of Formation of MgO - Calorimetry
III. Enzyme Kinetics of Papain
IV. Spectrophotometric Determination of an Equilibrium Constant
V. Acid-Base Chemistry
VI. Redox Chemistry
Instruction and Evaluation Methods:
The primary instructional methods utilized in CHM152L are hands-on laboratory exercises. Demonstrations of laboratory methods and techniques will prepare the student to make independent observations of chemical phenomena and measurements of chemical properties.
Assessment of Outcomes:
Experimental observations and results will be completed for each of the six laboratory exercises. Each lab is designed to address the content areas listed in the course outline. Assessment of student learning outcomes is based on the correct identification of the composition or concentration of unknown materials through application of the scientific method (scientific inquiry, quantitative reasoning) and on the results of a final examination (scientific inquiry, quantitative reasoning). Both of these assessment tools test the student's competence with basic laboratory methods and techniques.
The student will earn full credit for a lab exercise if their determined unknown value indicates they have mastered the required techniques, scientific methods and calculations. Partial credit will be awarded if reported values indicate problems with laboratory technique, scientific method, or quantitative analysis.
Getting Started – First and Second Lab Periods:
· Start of first period: A lecture will be given introducing you to CHM 152L and laboratory safety. Review technique videos on instructional labs homepage as needed for each experiment.
· Complete assignment I during the safety lecture and turn it in to your TA in lab and fill out the lab performance contract.
· Do assignment II with a lab group (based on assigned lab bench) and start the loncapa pre-lab for intro & exp. A. Do MSDS tutorial and print certificate if this was not done in CHM151L previously.
· Before the second lab period you must obtain a lab manual, lab notebook, and goggles and complete the pre-lab assignment for the introduction and experiment A, Synthesis of an Iron Salt. The pre-lab work for the introduction and experiment A in the lab manual consists of reading them and completing the web based loncapa pre-lab questions for the introduction/exp. A before the second lab period (see deadlines listed below).
· Start of second lab period: TA gives a pre-lab quiz and then gives a pre-lab lecture.
· Sign out a locker bin on your locker list, and start experiment A. Return the completed locker list to your TA before leaving.
· While waiting for the crystals to form check out your locker bin, replace any broken or missing items, sign the locker list, and give it to TA.
Course Grade:
The course grade is based on successful completion of the laboratory exercises. Points will be awarded for quizzes, online loncapa pre/post-lab questions, utilization of a laboratory notebook, a written laboratory report, and on the identification or quantification of chemical unknowns. Grades will be assigned as follows:
POINT ASSIGNMENT:
|
Item Graded
|
Points |
Grading Grade |
Scale Points |
Percent |
|
Unknown Exp. B – Enthalpy of reaction unknown |
80 |
A |
900+ |
90&over |
|
Unknown Exp. D – Molarity NaSCN |
80 |
B |
800-899 |
80-89.9 |
|
Unknown Exp. E - Weak Acid Equivalent Formula Wt |
80 |
C |
700-799 |
70-79.9 |
|
Unknown Exp. F – Percent Sodium Oxalate |
80 |
D |
600-699 |
60-69.9 |
|
Web Based Loncapa Pre and Post Lab Questions |
120 |
F |
<600 |
<60 |
|
Laboratory Notebook (Two gradings for 150 total pts) |
150 |
|
|
|
|
Lab Performance (Can lose or gain points) |
|
|
|
|
|
Report – Synthesis and Characterization of Fe Salt |
90 |
|
|
|
|
Quizzes - Each quiz is worth 20 pts for each of 6 exp. |
120 |
|
|
|
|
Lab Final |
200 |
|
|
|
|
TOTAL POINTS |
1000 |
|
|
|
QUIZZES: A quiz will be given at the start of the period when a new experiment is begun. The quiz may have one question very similar to a post-lab question from the previous experiment and 2-5 questions from the current experiment covering the pre-lab questions and experimental procedures. Each quiz will be worth 20 points for each of the six experiments for a total of 120 points. Many of the questions for the final will come from the quizzes. The web based pre-lab questions for an experiment should be completed before starting lab work. To work safely in lab, students must be prepared.
WEB BASED PRE & POST LAB QUESTIONS: The purpose of the web based loncapa pre-lab is to help you prepare to do the experiments. Most of the loncapa modules must be completed on Mondays before 11:00pm the week of the scheduled start of an experiment along with post-lab questions for previous experiments. The post-lab for an experiment will review concepts and calculations covered in an experiment. The loncapa pre- and post-lab questions will be worth 120 points. For example if there are 90 possible loncapa questions and you complete 45 out of 90 questions your points will be calculated by multiplying the fraction you complete by 120 or 120x(45/90) =60 out of 120 points.
LABORATORY NOTEBOOKS: Correct data collection and record keeping is a major objective of this course. A bound laboratory notebook will be used to generate a "permanent" record of all observations, data collected, calculations, and error analysis. Data must be copied immediately and directly into the notebook (tape or glue computer-generated graphs into the notebook). You will be penalized 5 pts per occurrence if you record data or observations in places other than your notebook such as paper towels or the lab manual. A detailed description of how a notebook should be kept is presented in the introduction of the CHM 152L laboratory manual. At the end of each experiment there is a post lab that includes error analysis that must be done in your laboratory notebook before the next lab period. At the end of every lab period the instructor or TA will write the date and their initials after the last notebook entry for that lab period. 5 pts will be deducted from your total laboratory notebook points each time it is not initialed and dated before you leave or fail to complete the post lab in the notebook on time. Notebooks will be graded for format and content twice during the semester at unannounced times. Five points per day will be taken off for late notebooks. Notebooks late by more than one week will not be accepted. At the end of the semester, notebooks will be collected and may be kept by the department.
UNKNOWNS: One unknown will be used for each experiment except A and C. For each of these unknowns your reported answers will be graded on how close they are to the correct answer. Calculation-check printouts (for experiments B, D, E and F) must be stapled onto the unknown report sheet or the unknown will not be graded. (5 pts will be subtracted for unknowns that have to be resubmitted due to calculation errors or not have calculation checks attached). These unknowns must be turned in one lab period after the experiment is completed (due dates noted in the schedule are listed later in the syllabus). Turn unknown report sheets in on time at the Lab Prep Stockroom (SR) window (room 216) or 5 late pts will be taken off. Any unknown score may be improved by repeating the experiment with a NEW unknown checked out from the SR (-5 points off the unknown score for repeating experiment). Repeating an experiment with a previously used or another student's unknown will be treated as academic dishonesty.
REPORT: You will be required to write one report for this class. The report format is discussed on pages F-15 to F-19 in the lab manual. The report and calculations must be done individually; only data should be shared between lab partners. The report will be done in sections. A rough draft of the introduction, procedure, and the results section will be due during the semester as noted later in this syllabus. All rough drafts and the report grading sheet must be submitted with the final version of your report. Up to ten points will be deducted from your total report grade for rough drafts that are late and/or poor work. Final reports will not be accepted if they are late! (See deadlines listed in this syllabus).
FINAL: Consists of 50 cumulative and challenging multiple-choice questions. The final is worth 200 points (20% of your grade) and will be given the last week of the semester before finals week.
EXTRA CREDIT: An experiment on electrochemistry can be completed for 20 extra credit points. The experiment is posted on the CHM152L Homepage.
LAB PERFORMANCE: Proper technique, safety, and cleanup procedures are required in this lab. Poor technique such as using the balance or pipettors incorrectly, unsafe behavior such as not wearing goggles or not cleaning up a chemical spill will result in the loss of 1-5 points per incident. Exceptional lab performance for go above and beyond what is required will be rewarded with extra credit. You are required to clean any used glassware and your work station at the end of every lab period. If you break any glassware you must pay to replace it at the chemistry stockroom. Your workstation drawers must be complete at the end of each lab period. There will be 1-5 point deductions for each problem noted. If you remove glassware from another student's bin or workstation you will be asked to drop the lab. You will also lose points each time you forget to bring your notebook to lab. You will be completing a contract on issues regarding lab performance.
SAFETY: Safety in the laboratory is of great concern to the chemistry department. You are expected to be familiar with and adhere to the chemistry department safety rules at all times while in the laboratory. Be informed about the hazards of chemicals before you use them. Every chemical in the laboratory is labeled with a hazard code. If you would like additional information, material safety data sheets for every chemical used in this lab are available for your reading in room 212. Please talk to your instructor if you have special medical conditions such as respiratory problems, allergies, pregnancy, etc. so that special precautions can be taken. Phones are located in each hallway to contact campus security at 3-3000. Students must clean up their work areas before leaving and cleanup any spills with a damp sponge. Always rinse out the sponge after using it. Students leaving spills or dirty work areas will lose lab performance points.
PLAGIARISM: NAU regards plagiarism as a serious offense. Students who are found guilty can expect to suffer consequences appropriate to the extent of the violation. This can involve being summarily dismissed from the course with a failing grade. The most common form of plagiarism observed in this course is to use some or all of the information from another student on a laboratory report as part of your own report. You must do your own calculations and write your own reports regardless of whether you work with another student in a team on an experiment or not. Only raw data for group work (not data for unknown) and the iron salt analysis is shared.
MAKE-UP LABS: You may attend another section of CHM152L to make up a missed lab if you have been sick or miss a lab with an institutional excuse. To attend another lab section you must get your normal TA's approval to attend a makeup lab and they will fill out a “make up lab slip”. Take this slip to the TA of the lab you wish to attend to complete the make up work. If there is enough space (less than 24 students) and equipment, you will be allowed to work in the lab at the instructor's or TA’s discretion. The TA in the makeup lab will complete the slip and give it back to your regular TA. You may not attend make up labs if you fail to attend you normal lab section regularly.
DROPS: No drop slips for this lab course will be signed after the drop deadline, Friday, October 24. Students who drop or stop coming to lab must check-in their locker bin during their normal lab section before date or they will be billed $30 for a locker bin check-in fee.
TEXBOOK AND REQUIRED/OPTIONAL MATERIALS: Required: CHM152L, General Chemistry II Lab Manual 2008•2009 by Hayden McNeil and Laboratory Notebook (bound & 5x5 grid) are required texts for this lab course. Indirectly vented safety goggles are also required. All items are available in the NAU bookstore or University Text and Tool. They should be purchased well before the second lab period. If there are no lab manuals in the chemistry textbook area, inquire at the textbook desk immediately. Optional: Lab coat or apron. More information on this lab is available on the web: http://jan.ucc.nau.edu/~jkn/Labs.html Current grades can be checked at this web site also.
SCHEDULE: The following is the lab schedule for CHM152L. The "Dates for Lab” section indicates the dates when the class will work on particular experiments and when assignments are due. On days when a new experiment is started a quiz and a lab lecture will be given. The web based loncapa pre-lab questions must be completed by 11pm on Monday the week your lab section starts a new experiment as noted below. Pre lab quizzes will be given at the start of the lab periods when your lab section starts an experiment. No makeup quizzes will be given. Loncapa post lab questions will also be due at 11pm on Monday with the next pre-lab. In addition, you and your lab partner(s) will periodically get together at the end of lab periods to discuss your Iron Salt data; these meetings are referred to as "Team Meetings" in the schedule below.
Dates For Lab Sections
|
A-C |
D |
E&F |
G |
Experiments or Work for Day and Due Dates (Assignments Due Are Bolded) |
Loncapa Deadlines: |
|
8/26 |
8/27 |
8/28 |
8/29 |
Laboratory Lecture, safety/lab assignment I and II, Assignment I due at the end of the period. Assign II should be nearly completed. |
Due at 11pm on dates listed: |
|
9/2 |
9/3 |
9/4 |
9/5 |
Quiz over introduction, assignments and exp. A. Start Exp. A - Synthesis of Iron Salt, KxFe(C2O4)y.zH2O, locker bin and workstation checkout. |
Intro & A: 9/8 |
|
9/9 |
9/10 |
9/11 |
9/12 |
Quiz Exp. B - Calorimetry and finish Exp. A - Purification of Iron Salt. |
B & A: 9/8 |
|
9/16 |
9/17 |
9/18 |
9/19 |
Exp. B – Calorimetry. Checkout Unknown Packet in blue book. |
|
|
9/23 |
9/24 |
9/25 |
9/26 |
Quiz Exp. C – Enzyme Kinetics of Papain, Unknown Report Sheet for Exp. B due. |
C & B: 9.22 |
|
9/30 |
10/1 |
10/2 |
10/3 |
Quiz Exp. D - Equilibrium experiment and calculations, see videos on volumetric flask and pipettor. |
D & C: 9/29 |
|
10/7 |
10/8 |
10/9 |
10/10 |
Complete Exp. D and calculations, Analysis for % water in iron salt (Each student does one or more trials), Unknown Report Sheet for Exp. D due by end of period. Start Exp. E if time. team meeting. |
|
|
10/14 |
10/15 |
10/16 |
10/17 |
Quiz Exp. E - Acid Base Chemistry. See videos on weighing-by-difference and titration. |
E & D: 10/14 |
|
10/21 |
10/22 |
10/23 |
10/24 |
Exp. E - Acid Base Chemistry, team meeting. Draft of introduction and experimental (procedure) section of iron salt report due. |
|
|
10/28 |
10/29 |
10/30 |
10/31 |
Quiz Exp. F – Redox Chemistry, Team Meeting, Unknown Report Sheet Exp. E due. |
F & E: 10/27 |
|
11/4 |
11/5 |
11/6 |
11/7 |
Exp. F - Redox Chemistry, Complete calculations for F. Empirical formula calculations are due before you leave lab today. team meeting. |
|
|
11/18 |
11/12 |
11/13 |
11/14 |
Finish Exp. F. Unknown report sheet for Exp. F due. Draft of results section of report due (TA will look over during lab & return it to you before you leave). Turn in Lab Notebook and check-in locker if done. |
|
|
11/25 |
11/19 |
11/20 |
11/21 |
Review for final and makeup lab. Report on the Synthesis & Analysis of Iron Salt due. Locker bin/workstation check-in deadline (will be billed on this date). The penalty for not checking in your locker bin is $30. |
|
|
11/26 |
11/26 |
11/26 |
11/26 |
All unknown report sheets due for all sections. NOTHING WILL BE ACCEPTED AFTER THIS DEADLINE (turn in at 216, lab prep stockroom). |
F: 11/26 by 5pm |
|
12/2 |
12/3 |
12/4 |
12/5 |
Lab Final given at the start of the period along with the Lab Evaluation. Check final grades. |
|
Lab Sections Offered Fall 2008 (Office hours will be posted, all labs held in building 17, the science lab facility):
|
Sequence |
|
|
|
Room |
Instructor |
Teaching Assistant |
|
|||||||
|
Letter # |
Day |
|
Time |
# . |
Name/Office#/Phone# * |
Name |
|
|||||||
|
A |
5176 |
T |
11:10-2:10 |
228 |
Hurst/17-223/36204 |
Mares, Diane |
||||||||
|
B |
5178 |
T |
2:20-5:20 |
228 |
Hartzell/88-1205B/36397 |
Skakie, Ashley |
||||||||
|
C |
5180 |
T |
5:30-8:30 |
228 |
VandenPlas/20-317/ |
Kaur, Kathryn |
||||||||
|
D |
5182 |
W |
1:50-4:50 |
228 |
Barbera/20-318/37072 |
Kaur, Kathryn |
||||||||
|
E |
5184 |
Th |
11:10-2:10 |
228 |
Ingram/20-219/37877 |
Hogan, Michelle |
||||||||
|
F |
5186 |
Th |
2:20-5:20 |
228 |
VandenPlas/20-317/ |
Skakie, Ashley |
||||||||
|
G |
10526 |
F |
12:40-3:40 |
228 |
Hascall/20-301/ |
Mares, Diane |
||||||||
*There is an instructor and teaching assistant (TA) assigned to each laboratory section. The instructor will be available during normal lab times either in the lab room or in their office. They can also provide help during their office hours. Instructor office hours will be announced the first day of lab and posted. TAs will be available to help before, during, and sometimes after the laboratory but not at other times except by appointment. Your TA or instructor can also be contacted via email.
**Syllabus subject to change at instructor’s/TA’s discretion.
Correction to Lab Manual: Page C-11 under #3 instead of two test tubes it should read “….into a clean, dry test tube.”