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 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. Enthalpy of Formation of MgO - Calorimetry
II. Enzyme Kinetics of Papain
III. Synthesis of a Complex Iron Salt
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.
TEXBOOK AND REQUIRED/OPTIONAL MATERIALS: Required: CHM152L, General Chemistry II Lab Manual 2011-2012 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.
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. A – 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 |
60 |
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) & Rough Draft (30 points) |
30+90 |
|
|
|
|
Quizzes - Each quiz is worth 25 pts for each of 6 exp. |
150 |
|
|
|
|
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 will include questions similar to ones in the loncapa module including 4-6 pre-lab questions for the current experiment and 1-2 post lab questions for the previous experiment. Each quiz will be worth 25 points for each of the six experiments for a total of 150 points. Many of the questions for the final will come from quizzes. The web based loncapa module for an experiment should be completed before lab on the day you start an experiment. To work safely in lab, students must be prepared. There will be questions from the experiment risk assessment on the quiz.
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 before lab on the day you start the experiment. The post-lab for an experiment will review concepts and calculations covered in completed experiments. The loncapa pre- and post-lab questions will be worth 60 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 60 or 60x(45/90) = 30 out of 60 points. Loncapa will open for use on January 27, 2012.
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 (use pen!), 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 five days 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 B 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 A, D, E and F) should be stapled onto the unknown report sheet. (10 pts will be subtracted for unknowns that have to be resubmitted due to calculation errors so use the calculation checks). 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 to your TA or 10 late pts will be taken off. Any unknown score may be improved by repeating the experiment with a NEW unknown checked out from the stockroom (-10 pts off the unknown score for repeating experiment). Repeating an experiment with a previously used or another student's unknown # or data is academic dishonesty.
REPORT: You will be required to write one report for this class. The report format is discussed in the appendix of the lab manual. The report and calculations must be done individually; only data may 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 from quizzes, loncapa problems, and all lab work. The final is worth 200 points (20% of your grade) & will be given in your normal lab section 4/23-4/27.
EXTRA CREDIT: An experiment on electrochemistry can be completed for 35 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 points per incident. Exceptional lab performance 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 replace it at the chemistry prep stockroom (you may be billed depending on your total charges). Your workstation drawers must be complete at the end of each lab period. There will be 1-30 point deductions for each problem noted. If you remove glassware from another student's bin or have extra stuff in yours you will lose points. 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 (be aware of hazard codes). 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 or on the web. Do a risk assessment for each experiment noting hazards and precautions. Please talk to your instructor and TA 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 and wring it out after using it. Wash your hands at the end of lab as you leave.
Academic Dishonesty: The Department of Chemistry and Biochemistry strictly enforces the University’s policy on academic dishonesty. Sanctions imposed for academic dishonesty include receiving partial or no credit on the item in question without the chance to improve the score, receiving an F for the course, or expulsion from the University. Using another student’s unknown, unknown #, data, results, or report will be treated as academic dishonesty. For group work only raw data can be shared. In addition, if you repeat an experiment you must check out a new unknown from the stockroom. Using the same unknown # twice will be considered academic dishonesty. If other offenses are found in department or university records repeat cases of academic dishonesty will have serious consequences. The most common form of academic dishonesty observed in lab is plagiarism or using some or all of the information from another student on a laboratory report as part of your own report. If you use information from sources such as the lab manual, cite that source in your report, otherwise it will be considered plagiarism.
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 in person or by email noting the makeup lab you wish to attend. Your TA will email the TA of the lab you wish to attend to complete the makeup 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 for the makeup lab will notify regular TA after the makeup. You may not attend make up labs if you fail to attend your normal lab section regularly.
WITHDRAWAL FROM LAB: The last day to withdrawal from this lab course is Friday, March 23. Students who withdraw or stop coming to lab must check-in their locker bin during their normal lab section by 3/23 or they will be billed $30 for a locker bin check-in fee.
Getting Started – First and Second Lab Periods:
· Start of first period: A lecture will be given introducing you to CHM 152L and laboratory safety. Watch the video on using the eye wash and safety shower (also MSDS video and safety video if not seen in CHM 151L). Go over use of hotplate stirrer. Check out your locker bin and workstation. Replace any broken or missing items, place extra equipment in the lost and found box, sign the locker list, and give it to the TA.
· 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). Complete the calibration exercise and always check the calibration of any pipettor before using it. 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, goggles, and a pen. Carefully read the introduction and experiment A (Enthalpy of Formation of MgO - Calorimetry) and outline key aspects of the procedure and carefully study the safety information doing a risk assessment before the second lab period (see deadlines listed below). Review technique videos on the instructional labs homepage covering the balance, graduated cylinder, pipets, pipettor, volumetric flask & dilutions, titration, and weighing by difference. Refer to these videos as you use these techniques during the semester.
· Start of second lab period: TA will give a pre-lab quiz over the introduction and exp. A and then gives a pre-lab lecture.
· Start experiment A.
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. The web based loncapa pre-lab and post lab questions must be completed before lab on the day you start an experiment as noted later in the syllabus. Pre lab quizzes will be given at the start of the lab periods when your lab section starts a new experiment. No makeup quizzes will be given. Lab lectures will be given nearly every week. 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 (**Syllabus and schedule subject to change at instructor’s/TA’s discretion.)
|
ABCD Tu |
EFGH Wed |
IJKL Th |
MNO Fri |
PQR Mon |
Experiments or Work for Day and Due Dates (Assignments Due Are Bolded) |
Loncapa Deadlines |
|
1/17 |
1/18 |
1/19 |
1/20 |
1/23 |
Laboratory Lecture, safety/lab assignment I and II, Assignment I & II due at the end of the period. Locker bin and workstation checkout. |
Before lab week of: |
|
1/24 |
1/25 |
1/26 |
1/27 |
1/30 |
Quiz Exp. A - Calorimetry, Review use of loncapa. |
Opens: 1/27 |
|
1/31 |
2/1 |
2/2 |
2/3 |
2/6 |
Exp. A – Calorimetry. Checkout Unknown Packet in blue book. |
A: 2/6 |
|
2/7 |
2/8 |
2/9 |
2/10 |
2/13 |
Quiz Exp. B – Enzyme Kinetics of Papain Investigated by Spectroscopy, Unknown for Exp. A due. |
B & A: 2/6 |
|
2/14 |
2/15 |
2/16 |
2/17 |
2/20 |
Quiz Exp. C - Start Exp. C - Synthesis of Iron Salt, KxFe(C2O4)y.zH2O |
C & B: 2/13 |
|
2/21 |
2/22 |
2/23 |
2/24 |
2/27 |
Quiz Exp. D - Equilibrium experiment and calculations, finish Exp. C - Purification of Iron Salt, see videos on volumetric flask and pipettor. |
D: 2/20 |
|
2/28 |
2/29 |
3/1 |
3/2 |
3/5 |
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. Team Meeting. |
C: 2/27 |
|
3/6 |
3/7 |
3/8 |
3/9 |
3/19 |
Quiz Exp. E - Acid Base Chemistry. See videos on weighing-by-difference and titration. The HCl titration will not be done: see website. |
E & D: 3/5
|
|
3/20 |
3/21 |
3/22 |
3/23 |
3/26 |
Exp. E - Acid Base Chemistry, team meeting. Draft of introduction and experimental (procedure) section of iron salt report due. Unknown Report Sheet Exp. E due. Team Meeting. |
|
|
3/27 |
3/28 |
3/29 |
3/30 |
4/2 |
Quiz Exp. F – Redox Chemistry – Prep potassium permanganate solution, finish standardization and iron salt if possible. |
F & E: 3/26 |
|
4/3 |
4/4 |
4/5 |
4/6 |
4/9 |
Exp. F - Redox Chemistry, Finish iron salt and start unknown. Empirical formula calculations due before you leave lab today. Team Meeting. |
|
|
4/10 |
4/11 |
4/12 |
4/13 |
4/16 |
Makeup lab. Unknown report sheet for Exp. F due. Report on the Synthesis & Analysis of Iron Salt due. Turn in Lab Notebook if done with lab work. Review for final. Locker bin/workstation check-in deadline: Penalty for not checking in your locker bin is $30. |
F Postlab: 4/16 - 11 pm |
|
4/17 |
4/18 |
4/19 |
4/20 |
|
Makeup Lab |
|
|
4/20 |
4/20 |
4/20 |
4/20 |
4/20 |
All late unknown report sheets due for all sections by 6:30pm on 4/20. NOTHING WILL BE ACCEPTED AFTER THIS DEADLINE (turn in at 216, lab prep stockroom). |
|
|
4/24 |
4/25 |
4/26 |
4/27 |
4/23 |
Lab Evaluation. Lab Final given after evaluating the lab. Check current scores. |
|
|
5/1 |
5/2 |
5/3 |
5/4 |
4/30 |
Questions about final grades with TA, lab cleanup, lab evaluations. |
|
Lab Sections Offered Spring 2012 (Office hours will be posted, all labs held in building 17, the science lab facility):
|
Sequence |
|
|
|
Rm |
Instructor |
Teaching Assistant |
|
|
||||
|
Letter # |
Day |
|
Time |
# |
Name/Office#/Phone# * |
Name |
|
|||||
|
A |
2362 |
T |
8-11am |
228 |
Mares/20-221/36296 |
Hochhalter, Christian |
||||||
|
B |
2363 |
T |
11:10-2:10 |
228 |
Koppisch/88-213/38893 |
Oulton, Chris |
||||||
|
C |
2364 |
T |
2:20-5:20 |
228 |
Mares/20-221/36296 |
No TA |
||||||
|
D |
2365 |
T |
5:30-8:30 |
228 |
Aguilera/20-116/32054 |
Green, David |
||||||
|
E |
2366 |
W |
8-11am |
228 |
Aguilera/20-116/32054 |
No TA |
||||||
|
F |
2367 |
W |
11:30-2:30 |
228 |
Aguilera/20-116/32054 |
No TA |
||||||
|
G |
2368 |
W |
2:40-5:40 |
228 |
Gage/20-312/36394 |
Denzer, Dara |
||||||
|
H |
2369 |
W |
6:00-9:00 |
228 |
Aguilera/20-116/32054 |
Bates, Amanda |
||||||
|
I |
2729 |
Th |
8-11am |
228 |
Myers/20-313/33866 |
Gilbert, Greg |
||||||
|
J |
2837 |
Th |
11:10-2:10 |
228 |
Mares/20-221/36296 |
No TA |
||||||
|
K |
2927 |
Th |
2:20-5:20 |
228 |
Hascall/20-301/37088 |
Hochhalter, Christian |
||||||
|
L |
4004 |
Th |
5:30-8:30 |
228 |
Mares/20-221/36296 |
Bates, Amanda |
||||||
|
M |
4219 |
F |
8-11am |
228 |
Altamirano/20-416/37322 |
Denzer, Dara |
||||||
|
N |
4500 |
F |
11:30-2:30 |
228 |
Altamirano/20-416/37322 |
Brusven, Johnathon |
||||||
|
O |
4501 |
F |
2:40-5:40 |
228 |
Mares/20-221/36296 |
Brusven, Johnathon |
||||||
|
Q |
7543 |
M |
9:10-12:10 |
228 |
Gibson, Matt/17-218B/37058 |
No TA |
||||||
|
R |
7544 |
M |
1:50-4:50 |
228 |
Gibson, Matt/17-218B/37058 |
No TA |
||||||
|
P |
4502 |
M |
5:30-8:30 |
228 |
Myers/20-313/33866 |
Gilbert, Greg |
||||||
*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.