CHM 113 & 117 Fall 2014

"A teacher is never a giver of truth - he is a guide, a pointer to the truth that each student must find for himself. A good teacher is merely a catalyst". Bruce Lee

Please check this page each week for updates and announcements.

Refer to lab schedule tab and plan your experiment in advance.

All students should attend assigned lab each week. If you fail to attend one of the listed experiments in your schedule you cannot pass this course.

All students should prepare in advance for each lab experiment. In addition to lab manual, learning materials will be posted in LIVE D2L (use your Wilkes username and password, select CHM 113 D1 x 117 D1 course). Your progress will be monitored and evaluated. If you cannot find the course (CHM 113 D1 x 117 D1) in LIVE D2L, it means that you are not registered for the Disscussion (CHM 113 D1 or CHM 117 D1).

 

Syllabus:download the pdf file

 

Sunday, October 19: The report form for the Examination of the Hydrogen Spectrum has been posted. Check the Report Forms tab.

Thursday, October 16: The 7th Learning Session (Examination of the Hydrogen Spectrum) has been posted in LIVE D2L.

 

Sunday, October 12: The report form for the Determining Ascorbic Acid Content in Vitamin C Tablets has been posted. Check the Report Forms tab.

Wednesday, October 8: The 6th Learning Session (Determining the Ascorbic Acid Content in Vitamin C Tablets) has been posted in LIVE D2L. There is an example on how to calculate the Vitamin C content using one set of experimental data.

 

Monday, Sept 29: The report form for the Synthesis of an Iron Coordination Complex has been posted. Check the Report Forms tab.

Thursday, Sept 25: The 5th Learning Session (Preparing an Iron Coordination Complex) has been posted in LIVE D2L.

 

Monday, Sept 22: The report form for the Physiologically Important Anions has been posted. Check the Report Forms tab.

Thursday, Sept 18: The 4th Learning Session (Physiologically Important Anions) has been posted in LIVE D2L.

 

Thursday, Sept 11: The 3rd Learning Session (Gravimetric Determination of Phosphorus in Plant Food) has been posted in LIVE D2L. It is very important that you review the session (it's a short one). In order to apply the Green Chemistry Principles, all quantities were scaled down. Please use the smaller quantities specified in the online Discussion. This is not a change in the procedure; it only encourages you to think before acting. Finding ways to reduce the chemical waste without compromising the analysis/result represents an important step toward improving the world around you.

 

Sunday, Sept 7: The report form for the Separation of a Ternary Mixture has been posted. Check the Report Forms tab. Please do not use the form to record data during the lab.

Wednesday, Sept 3: The 2nd Learning Session (Separation of a Ternary Mixture) has been posted in LIVE D2L. There are few examples on how to calculate uncertainties. Since you need this knowledge for density calculation in the first lab report, you may want review this session before completing the lab report for Analytical Weighing. ..

 

Monday, Sept 1: The report form for Analytical Weighing .... has been posted. Check the Report Forms tab. Please do not use the form to record data during the lab.

Thursday, Aug 28: It seems that LIVE D2L access issue has been resolved. Please complete all steps in the online session.

Wednesday, Aug 27: As I promised, the 1st Learning Session has been posted in LIVE. However, there are IT issues and only half of the students can see CHM 113 D1 x 117 D1 in LIVE. The Wilkes IT Department will solve this issue by the end of the day. Please be patient.

 

 

This is the schedule of lab experiments. If there will be changes, the schedule will be adjusted to reflect those changes.

Note the rotation of labs during the weeks of November 3-7 and November 10-14. More info will be provided soon. Plan your lab preparations in advance.

This is a tentative schedule:

CHM 113 & 117 Fall Semester 2014

Dates

Lab Work

Comments

M – F (25 Aug. – 29 Aug.) Check-in week Safety, policy review, etc.
T – M (2 Sept. – 8 Sept.) Measurements Uncertainties & Statistics (mean, std dev)
T – M (9 Sept. – 15 Sept.) Separation of a Ternary Mixture Concepts of mixtures
T – M (16 Sept. – 22 Sept.) Determination of Phosphorus in Plant Food Formula Mass, Mole
T – M (23 Sept. – 29 Sept.) Physiologically Important Anions Anions
T – M (30 Sept. – 6 Oct.) Preparing an Iron Coord. Complex Stoichiometry / Synthesis
T – F (7 Oct. – 10 Oct.) No labs Tues. – Friday FALL BREAK
M – F (13 Oct. – 17 Oct.) Det. Ascorbic Acid in Vitamin C Soln. Stoichiometry / Titration
M – F (20 Oct. – 24 Oct.) Hydrogen Spectrum Electromagnetic Radiation
M – F (27 Oct. – 31 Oct.) Qualitative Analysis of cations Cations
Rotation of Experiments:
M – F (3 Nov.  – 7 Nov.) & M – F (10 Nov. – 14 Nov.)
Molecular Modeling - Spartan Computational Chemistry
The Fuel in a Bic Lighter Gas Laws
M – F (17 Nov.  – 21 Nov.) Enthalpy of Neutralization Thermochemistry
M – F (24 Nov. – 28 Nov.) No labs Mon. – Friday THANKSGIVING
M – F (1 Dec. – 5 Dec.) Lab Check-out Collecting lab reports

Report Forms

Please check every week!

Examination of the Hydrogen Spectrum: pdf form and MS Word

Determining the Ascorbic Acid Content in Vitamin C Tablets: pdf form and MS Word

Synthesis of an Iron Coordination Complex: pdf form and MS Word

Physiologically Important Anions: pdf form and MS Word

Gravimetric Determination of Phosphorus in Plant Food: pdf form and MS Word

Separation of a Ternary Mixture: pdf form and MS Word

Analytical Weighing, Liq Transfer, Density of a Metal: pdf form or MS Word

Grading

This is the grading scheme for your laboratory work:

Component Percent
Graded prelabs 15%
Graded lab reports 60%
Notebook 12.5%
Preparation and in-lab technique, performance and professionalism 12.5%

Final grade assignment:

Percentage Grade
90.0 - 100 4.0
85.0 - 89.9 3.5
80.0 - 84.9 3.0
75.0 - 79.9 2.5
70.0 - 74.9 2.0
65.0 - 69.9 1.5
60.0 - 64.9 1.0
less than 60 0.0

 

Lab Rules and Policies

  • If you are absent see or call the instructor as soon as possible to arrange a time for a make-up lab.
  • ATHLETES!!  You already know your travel schedule (post-season tournaments excepted), so discuss any labs you may miss with your instructor NOW!! You can make definitive arrangements later (week of the lab) but let them know now. 
  • You are expected to complete all missed lab work either on another day during the week an experiment is given or during that week immediately following.
  • If you will be gone on a family emergency, or are hospitalized please have someone notify us so we can set aside or remake what you will need. Otherwise, since we do not – and in some cases cannot store reagents indefinitely, you will have to make your own solutions as well as perform the experiment.
  • Note that an excusal form allows you to make up the lab; it does not change the original due date of the laboratory report.
  • If you do comply with the rule about excusal forms or abuse the use of them we may not be able to give credit for your work. These forms are necessary to preserve equity for everyone.
  • There will be a charge assessed on any damaged instrument, and on certain community items that are particularly expensive and hard to replace.
  • All appeals on grading problems will be considered by the instructor in charge only if they are in writing. We reserve the right to regrade the entire test or report if any part of it is appealed.
  • For scientific questions, start by seeing your instructor. If your instructor is not available consult another lab instructor. Office hours for lab instructors will be printed in the syllabus. If you have exhausted these reasonable resources, consult the professor in charge of coordinating the labs. Since this course is so large, the lab coordinator will see students in order as they request.
  • Your reports must be in by the beginning of your regularly scheduled period of the week following completion of the experiment. You will be penalized 25% of the total possible points for each additional day that a report is handed in late. Extensions will be granted only by instructor.

Lab Safety at Wilkes is Priority #1.  Please observe the following!

  1. Eye protection, in the form of safety glasses or safety goggles, must be worn at all times. Contact lenses should NOT be worn in the laboratory. They offer little protection, and if a chemical should enter the eye, they would hinder proper first aid, and greatly increase the possibility of serious eye injury. All eye protection must have shatter proof lenses and side shields. If you refuse to wear eye protection, you cannot come to the lab.
  2. Emergency Telephone Number—including fires, call x4999
  3. Report any emergency, injury, chemical spill, or breakage to your TA immediately. All injuries must be reported, however trivial.
  4. At no time is an undergraduate student allowed to work in the laboratory without the supervision of an instructor. Students should perform authorized experiments only.
  5. Eating, drinking, and smoking in the laboratory are strictly forbidden. If you need to eat or drink, do it in the hall. Wash your hands before leaving the lab.
  6. NO FLIP FLOPS!!  Closed shoes must be worn in the lab. Ballerina flats and sandals are not permitted. Long hair should be tied back during the lab period. Dangling jewelry, long floppy sleeves, loose garments, short skirts, shorts of any length (including capri), scarves, and neckties should not be worn in the lab.
  7. Keep aisles and corridors clear. Back packs, coats, unused books, etc. must be stored on the coat rack in each lab. Access to emergency equipment (fire extinguishers, eye washes, etc.) must be unobstructed.
  8. When working with chemicals, gloves and lab coats (preferably with snaps for easy removal) are recommended. Always use the fume hood for chemical operations too hazardous to perform on the bench.
  9. Burns and fires are serious hazards. Some substances you will work with burn very easily. Also note that hot glassware looks very much like cold glassware, but its effect on your skin is very different.
  10. Follow prescribed procedures for disposal of chemical waste for storage of chemicals. Do what you can to reduce the chemical waste.
  11. Know the location of emergency exits, emergency showers, fire blankets, eyewash fountains and fire extinguishers. Always know two different ways out of the labs. In a real emergency, follow the instructions of the instructor, and move, don’t argue.
  12. Don’t clown around. The margin for error is smaller in the lab than in most other places. Visitors are not permitted in the lab. If the visit is essential, see them in the hall!

Lab Notebooks

You are expected to keep a current laboratory notebook. Read all guidelines provided in the lab manual (pages vii-viii). You are expected to record several classes of information in it:

  • It is your notebook, not ours. Use it to take notes of the pre-lab lectures. Leave room to edit or correct what you thought you saw or heard. This information will help you with the labs and lab reports.
  • PUT YOU NAME ON IT.  Many students forget this.
  • Allow a page or two at the beginning for a “Table of Contents” Section.
  • All of the numbers and units pertaining to the experiment. This information must be recorded directly in your notebook, not on scraps of paper, since even if it is transferred once, there is danger of digits being interchanged, etc.
  • All the observations you have made. This includes smells, colors and color changes. It includes the size and shape of solid crystals, abrupt changes in temperature, or any other phenomena. When in doubt, record it.
  • Any changes in procedure. If you diluted a reagent down from a concentrated stock solution, record it. If there was a dead cockroach in your flask, when you did a titration, record it. When in doubt, record it.
  • The notebook must be current and consecutive. All your semester’s work must be available to you at any time. The completeness will be checked on a periodic basis by the instructor.
  • You are responsible for showing your instructor your notebook data at the end of each lab period. Sign and date below the last recording. This is required and should be a part of your lab routine.

 

Please email Adriana Dinescu if you have questions related to this website.

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