FALL 2003
Office Hours: Mon, Wed, Fri, 11-12, Tu, 10 or by appointment
email: Michael.Strauss@uvm.edu
Text: Solomons & Fryhle's Organic Chemistry, 7th edition, 2000 (and study guide.)
Lab Text: Williamson, Macroscale and Microscale Organic Experiments, 3rd edition.
Molecular Models: HGS Molecular Models
Course Prerequisites: Chemistry 32 or 36. Grade of C or better only. If you got less than a C, you should not be enrolled in Chemistry 141.
Organic chemistry is a subject which involves many new concepts, a voluminous number of reactions and structures, as well as a large set of rules and formal relations. The size of the text provides an idea of the task ahead for you. Learning the subject requires a substantial commitment of time and intellectual effort. Nevertheless, there are many connections and relations within this large body of information which, from an informed and experienced perspective, show the subject as a logically connected whole. To experience this overall connected view is not possible in the beginning.
So... at first the subject may often appear to you as a collection of disconnected facts. In time, the bigger picture will emerge. You must be persistent in your study, especially in your efforts at problem solving. Do not fall behind! You must complete the work assigned by the date indicated on the schedule below or you will have a greater and greater difficulty as the course proceeds.
If you work hard at learning the material in the first few weeks, you will soon begin to see the connections between all the facts, rules, definitions, conventions and symbol systems which make organic chemistry into an ordered whole.
In the beginning, make a special effort to learn how to write structures correctly, with the right number of bonds, charges, shared and unshared electron pairs, etc. This means you must become an expert in writing Lewis Structures (which you learned about in Introductory Chemistry.) It is also important that you have a good understanding of the relative electronegativity of atoms, Lewis and Brønsted-Lowry acid base theories, and the rules for writing contributing resonance structures. All this will help make your understanding of reaction mechanisms easier. Without these basics, you will be wandering blindfolded through a maze!
Do as many problems in the back of each chapter as you can. Recommended problems are listed later in this syllabus. If you have time to do more (i.e., the problems mixed into the text in each chapter,) it will greatly benefit your understanding of the subject. Learning organic chemistry is a long term, cumulative, intellectual enterprise which takes time. Cramming the night before exams does not work well at all.
Your course grade will be based on three midterm examinations, a cumulative final examination (standardized American Chemical Society exam or an exam equivalent to this), and your laboratory grade, as follows:
Lab 20%
Exams (3) 60%
Final 20%
Exam and Review Session Dates (ALL WEDNESDAY EVENINGS):
Exam 1 September
24, 6 P.M., B 106 Angell (Lecture Room)
Exam 2 October 22rd, 6 P.M.,
Exam 3 November 19th, 6 P.M.,
Review sessions will be held to
go over practice exams the day of or day before each scheduled midterm exam.
These will be held in the same lecture room (B 106 Angell) and the
times will be announced. There may be additional recitation sections.
IF YOU HAVE A CLASS CONFLICT WITH A WED. EVE EXAM TIME, SEE ME AHEAD OF
TIME TO ARRANGE AN ALTERNATIVE TIME TO TAKE YOUR EXAM.
Other things you must get soon:
Safety Goggles - Very attractive and stylish. They'll make you look like a real Nobel Prize winning scientist. More importantly, they must always be worn in the lab to protect your eyes. You cannot wear contacts in the lab. Wear regular glasses underneath the goggles. Buy the goggles in the bookstore. No goggles - no laboratory (We'll miss you, but thatís the rule.). And if you wear them on top of your head instead of over your eyes, you'll bring down the wrath of Godzilla and other assorted folks concerned with safety, including me.
Breakage Card - This is required in order
to check into the laboratory and is available at the first floor stockroom
in Cook Building for only $40.00. But donít fret. If
you don't break any glassware, you get all your money back (yes...it's true)
and you can celebrate with a dinner out! Or if you take Chem 142, have
it signed at the end of Chem 141 and it will be good for next semester.
What a GREAT deal, yes? Bring your breakage card to every lab.
Your lab coat - Not required but highly recommended.
You want to keep chemicals, solvents, foul smelling slimes, and other such
stuff off your nice clothes. Even more importantly, you want to keep
them off your skin. And think how great you'll look in a nice, white,
scientific looking coat. If you're a pre-med, you can experience what
it feels like to look like a doc. Impress your parents. Have
a picture taken of yourself in your lab coat and send it home. Your
folks will know you're working hard.
A bound Lab notebook - The piece de resistance. With your lab notebook, goggles, and lab coat, you'll look SO impressive. Everyone will really want to get to know you. The bound lab notebook (National brand #43-571) is required and can be purchased at the bookstore for a modest sum.
An email address - You'll find it very convenient for asking questions you forgot to ask in class. And I'll try and check my email several times a day.
So..... Now you've got all the stuff.
What else is critically important?
Labs!
Go and see your lab teaching assistant and introduce yourself.
You may see him or her in lab, but should also visit them in their
office hours as well. They are here to help you, as am I. The
lab schedule appears later in the syllabus. The lab will begin the
week of September 15th.
It is designed to introduce you to new material, reinforce other material,
and give you an idea of the distinction between organic chemical formulas
and reactions on a page, and actually manipulating the substances in beakers
and flasks.....i.e., carrying out chemical reactions. You will get
a numerical lab grade of course, and this will contribute to the make up
of your overall course grade as noted above. It will be based on your
general ability to carry out experiments, the accuracy of your results, the
quality of your recorded and interpreted experiments, your lab quiz grades
and your general overall ability in the laboratory.
Do You REALLY have to do the assigned problems or read the book?
No, you don't! I don't collect problems or grade them. So if you're really a genius and already know everything about organic chemistry, you needn't bother to do the problems or read the book. But, if you aren't a Nobel prize winning organic chemist, there are lots of assigned problems so you won't be bored on the weekends. They are summarized in the LECTURE SCHEDULE CALENDER which appears later on in this syllabus. You'll really love these problems. They're SO much fun! They'll really help you learn organic chemistry. Not only that. Detailed worked out answers are in the study guide.
There are also reading assignments in the calender. Read ahead and
come to class prepared. We move through the material slowly in
the beginning, but much faster as the semester proceeds (some have said -
like a speeding bullet). So be prepared and dont fall behind.
IT IS VERY DIFFICULT TO CATCH UP IF YOU DO.
Help! - Where can you get help?
Please see me, or send email to me, if you are
having difficulties or have questions. You will get practice exams
and answer keys (which are exams from previous semesters.) These will appear
on the class website. The Learning Co-op also has tutors, and the
Teaching Assistants for this course also have office hours which will soon
be posted. And if you have so much cash you don't know what to do with
it, you can hire a special one- on-one tutor who will devote hours and hours
of personal tutoring time JUST TO YOU. If you really want something
like this, come and see me. Find out what suits you best and take advantage
of it. However, you must work on your own as well. A teacher
(prof, T.A., tutor, etc.) cannot learn for you. He or she can only
help, guide, and explain. If you don't read the text, attend lecture,
or do the problems, then you probably won't do well. To get help, you
really do need to know what you don't know. DO NOT WAIT UNTIL YOU FAIL
AN EXAM TO GET HELP. THAT WILL BE TOO LATE FOR YOU TO CATCH UP.
AND IF YOU DON'T GO TO CLASS OR DO THE PROBLEMS, GOING FOR HELP TO A TUTOR,
A TA, OR SEEING ME IN MY OFFICE HOURS A SHORT TIME BEFORE AN EXAM IS OF
LITTLE VALUE.
What is the box?
There are a lot of students in this class aren't there? Because of this, itís a little harder to ask questions. If you do ask, speak loudly so every one of the 170 or so people can hear you: "hey...PROFEsSoR... how do you write the Lewis structure of alpha-D-gluco-pyranosyl-beta-D-fructofuranoside? AND DO WE HAVE TO KNOW FLULGLES LAW?" You get the idea, right? Speak up! Don't be shy! If you are the shy type, or the genius type (and don't want to show your brilliance to the whole class), there is the box. This is a cardboard box at the exit of the room where you are encouraged to put anonymous comments, questions, complaints, or whatever else you wish (no candy wrappers, used tissues, tomatoes, doughnut crumbs, or hundred dollar bills ....please!) But put good stuff in there at any time. I will respond to you, and the whole class, during the next lecture on the overhead projector. If you wish a personal response, you can sign your name and give me your email address or phone number.
Where do you find exam results, grades and answers to exam problems?
These will generally be on the class website or sent via the class listerve.
You should make sure you get on this listserve when it is available!
"I stubbed my toe and couldn't get to lab, or to the exam, - sob!"
You must attend ALL your regularly scheduled labs unless it is absolutely IMPOSSIBLE. IMPOSSIBLE means DOCUMENTED ILLNESS, FAMILY EMERGENCY, OR OTHER EQUALLY IMPORTANT PROBLEM AS DETERMINED BY THE PROF (Thats me folks!) - the above are all valid reasons, and you must see me ahead of the lab time, if possible. Some typical examples of non valid reasons are: stubbed toes, hangnails, oversleeping, your roommate turned off the alarm, inadequate preparation, went to the wrong room, went at the wrong time, pet goldfish is sick, cat messed on your notebook, you forgot about lab, your calculator batteries went dead, headaches, minor toothaches, cold sores, dandruff, missed the bus, plane, train, submarine or other conveyance, upset stomach from Spaghetti-O meal. If you miss a lab for a valid reason, notify your lab instructor before the scheduled lab period (you can call the Chem Department Office at 62594 and leave a message for your TA - teaching assistant -, though it would be better to contact him or her directly by phone or email.)
An excused lab (meaning a valid reason for
missing the lab is established without question) must be made up the
same week it is missed if possible. To make up a missed lab, find a
lab section (preferably in the same room that you normally have lab) which
fits into your schedule. Contact the TA for that section and ask him/her
if there is room for you to make up the lab. Notify your regular TA
where and when you intend to make up the lab, and obtain any special instructions.
If you cannot make up an EXCUSED lab, notify your lab instructor and your
grade for that missed lab will be your average lab grade (determined at
the end of the semester). You may NOT make up an unexcused lab absence.
That will result in a zero. If you miss more than two labs (unexcused)
you will fail Chemistry 141. This is worth repeating several times,
as often students are shocked when they get an F at the end of the semester
because they missed more than two labs: If you miss more than two
labs (unexcused) you will fail Chemistry 141. If you miss more than two
labs (unexcused) you will fail Chemistry 141. If you miss more than
two labs (unexcused) you will fail Chemistry 141, etc. etc. etc. etc.............
If you must miss an exam (for a valid reason
- see above), you must notify me BEFORE the exam occurs, not after.
Of course if your train derails or your horse trips on the way to the exam
and you cant get here, youll have to tell me afterwards. If you are
not excused you will get a zero for the exam. Some typical examples
of non valid reasons are (as noted above for missed labs): stubbed toes,
hangnails, oversleeping, your roommate turned off the alarm, inadequate preparation,
went to the wrong room, went at the wrong time, pet iguana is sick, you
forgot about the exam, your calculator batteries exploded, headaches, minor
toothaches, hang nails, dandruff, head lice, missed the bus, plane, train,
submarine or other conveyance, upset stomach from greasy Marriott meal at
Cook Commons.
If you have a valid reason for missing an exam or quiz
(you were really ill, had a real family emergency, or were abducted by REAL
ALIENS on the night of the exam - you'll need pictures of this of course)
please notify me before the exam occurs, if possible. For you I have
another great deal (the only deal, actually): You will take a comprehensive
Make-Up Exam given at the end of the course (late November or early December).
This is like a mini final. Your grade on this Make-Up will be substituted
for the exam grade on the exam you missed. Of course most folks would
prefer to take the regularly scheduled exam, but for those who have valid
reasons for not doing so, the Make-Up option or other options (to be discussed
with me) do exist.
Please note the following statement from the UVM Catalog
and the Cat's Tale: Academic responsibilities have priority over other campus
events. Attendance at regularly scheduled classes has priority over
specially scheduled common hour examinations. This means that if you
have a real class scheduled exactly at the time of a Chem 141 exam, I WILL
make alternative arrangements for you, but if it is some other event (i.e.,
mega party at a downtown establishment) that will not necessarily be the
case. Sorry to be so hard-nosed about this, but in a class of 180,
exams cannot be given at times which suit everyone's personal schedule.
If you are concerned about time arrangements or have other problems in this
regard, stop by and talk to me. Do this soon. See the Exam schedule
on page 2.
Why Study? Why not just write equations and formulas on the back of your hand?
The answer to this question should be obvious,
but every year in Chemistry 141 there is a VERY SMALL group of folks who
attempt to do this during exams (shame, shame.) They try other
things as well, sometimes making changes on graded exams and bringing
them back for more points, copying off students next to them, sending in
other students to take their exams for them, programming equations and other
material into calculators, copying other students labs, etc., etc..(naughty,
naughty!!)
Such students are a small minority in this class,
and these comments are directed at them: These misguided efforts almost
always fail, and can result in expulsion from the university. For those who
are tempted, please read the section on Academic Honesty in the UVM catalog
and the Cat's Tale. Cheating isn't worth it. Exams are very carefully
monitored and laboratory reports are very carefully examined.
Now let's look at some of the schedules, calenders, as well as nuts
and bolts material that will keep you on track and happy as a clam during
the semester !!
Chem 141 Lab schedule
Read the entire assigned chapter in Williamson (your lab text) before
coming to lab and doing the experimental work. The experiments designated
within each chapter, below, describe the procedures that you will actually
carry out in the laboratory. Unless otherwise noted, you will be doing
the macroscale version of the experiment rather than the microscale version.
Week of: Experiments or Recitations (10 total)
Sept. 15 1. Check-in, First Recitation. Molecular Models, Handout
Sept. 22 2. Melting Points, Chapter
No. 4, Part 1, Experiments 2,3 and 4.
Sept. 29 3. Crystallization, Chapter No. 3, Experiments 3 and 7.
October 6 4. Distillation, Chapter No. 5, Experiments 4A
and 5A
October 13 5. Second Recitation
Oct. 20 6. Extraction, Chapter No. 8, Experiment 3
Oct. 27 7. Alkenes from Alcohols
(half scale), Chapter No. 11, Experiment 1 and GC analysis
Nov. 3 8. Synthesis of an Alkyne,
Chapter No. 59, experiments No. 3,5 (microscale)
Nov. 10 9.
Third Recitation
Nov. 17 10. Synthesis of 1-bromobutane, Chapter
No. 16, Experiment No. 2 (half scale)
Nov. 24 Thanksgiving..... NO LABS
Dec. 1 CHECKOUT
GENERAL PROCEDURES RELATING TO LABS:
1. During the first lab session you meet your TA (we have GREAT TA's) and listen to him or her tell you about the lab, check in, get your lock, make sure you have all your glassware (clean and unbroken) and have your first recitation section. You must have your breakage card to check in to lab.
After the first week of lab, for all labs following (except for recitation section weeks) before you come to the lab you should have completed a pre-lab in your bound lab notebook. The pre-lab consists of the title, date, purpose, brief procedure and data charts for the experiment you will be doing. To write the pre-lab you must read the Chapter in Williamson for the upcoming experiment. The purpose of writing the pre-lab is to prepare you for the experiment.
2. At the end of the semester you will check out of lab using your breakage card to replace any missing or damaged equipment (the cost will be deducted from the card). If you do not check out of lab you will fail the course and you forfeit the breakage fee. Oh what a terrible fate!!
3. Remember your lock combination! The is a charge of $1 after the first week if we have to look it up for you. That's mean, but it's the policy of the stockroom.
4. You are required to wear safety goggles when working in the lab. If you don't you will be asked to leave and be given a zero for that lab. This bears repeating: You are required to wear safety goggles when working in the lab. If you don't you will be asked to leave and be given a zero for that lab. If you forget your goggles, you can rent a pair for 50 cents from the stockroom for the day. However, these may have been previously worn by Godzilla (a smelly creature that may leak green fluid from its eyes - previously mentioned on page 2 of the syllabus.) And the Godzilla goggles may not fit you. Try and remember to bring your own.
5. All your lab work, data, observations, etc. are to be recorded in INK in your bound notebook, not on loose pieces of paper, candy wrappers or the back of your hand, from which you later copy data into your notebook.
6. KEEP THE LABORATORY CLEAN. Your mom and dad are not here to clean up after you. We will not clean up after you. The custodial staff will not clean up after you. Be neat. If you have a terrible urge to be messy... suppress it. Wait till you return to your dorm room. Thanks!
7. There is sufficient time to do all of the scheduled experiments if you read and understand the lab text ahead of time - before the experiment. Do not come to lab and then read about the experiment for the first time. COME PREPARED!!!
8. DON'T MISS A LAB. See the section above re: missed labs.
Specific routines in the lab...
1. As noted previously, each laboratory will be preceded by an introductory
lecture from your T.A..
2. Each week, including recitation weeks, there will be a laboratory quiz consisting of two questions: one about the previous experiment and one about the current experiment (or about a current lecture topic). Missed lab quizzes may NOT be made up, so plan to be in lab on time.
3. You will be expected to record all of your observations, data and procedures in the BOUND laboratory notebook in ink. Your T.A. will check your lab notebook TWICE during each laboratory period: 1) at the beginning of the period to ensure that you have prepared adequately for the day's experiment, and 2) at the end of the period to ensure that you have a complete written account of the day's experiment in an organized, legible fashion. For experiments done in pairs, if you need to use a partner's data in the calculations, they should be copied into your notebook (with proper acknowledgement) BEFORE leaving the laboratory. Based on these observations, your T.A. will give you either 3 points (acceptable), 1 point (not very good), or zero points (washout!!?). DO NOT WORK IN PAIRS UNLESS YOU ARE GIVEN SPECIFIC INSTRUCTIONS BY YOUR TA TO DO SO. GENERALLY, YOU LEARN LAB TECHNIQUES BETTER DOING THEM BY YOURELF.
4. Each experiment will require a written report (worth 10 points) organized as follows:
A. Title (date), (partner's name if applicable)
B. Introduction (25 words or less) 1 point
C. Experimental Procedure (a very brief suMmary using equations,
formulas, etc., of about
50 words or less) 1 point
D. Data and Calculations (tables of data, sample calculations, tabulated results, etc.) 1 point
E. Results and Discussion (observations, meaning of results, measurements, qualitative error analysis, conclusions, ways of improving the experiment, hazards, etc. 4 points
All lab reports must follow the above format! They should be clearly legible or typed, and should be approximately 3 pages in length. They are graded on a 10 point scale as noted above. They are due the week after the experiment is done (you will hand them in during lab of the following week.)
The lab Grade....
1. Reports: There are a total of ten experiments or recitations. Each report for each experiment or each attendance and participation at recitations is worth 10 points for a total of 100.
2. Quizzes: There are the equivalent of 10 quizzes worth 3 points each for a total of 30.
3. Notebook: Graded at a max. of 3 points per experiment for a total of 30.
4. General performance, attitude, effort, participation, etc..: At the
end of the semester, your T.A. will be asked to evaluate you on the basis
of these qualities, and also upon your laboratory technique (do you drop
beakers every 5 minutes?) and record keeping (are you jotting data on the
back of your hand or on candy wrappers?). The maximum number of points
for this evaluation is 24. (24 = possible Nobel prize winner; 19 =
George Bush science award winner; (actually, I don't think George took organic
chemistry in college), 15 = The Don Rumsfeld good chemist award; 10 = possibly
dangerous in the lab; 5 (should you meet a 5 person in the lab, run
for the nearest exit.)
The points noted above add up to a total of 184. This will be adjusted
to reflect 20% of your total grade for the semester. The T.A. only
assigns points for the lab grade, NOT a letter grade. The points assigned
by each T.A. for lab grades are normalized to compensate for differences
in individual T.A. evaluations. They are then added to your total from
the "hourly" (evening) exams, and the final exam. The total points
for the course are then curved to give the final semester letter grade for
the course (midterms = 60%, final = 20%, lab = 20%).
A word about the balances
Many of the experiments you will perform during the year require
accurate weighing on balances. These balances are VERY expensive
(you could get a nice used Chevy without much rust for the cost of each
of them). Treat them with respect and care. Do not get chemicals all
over them.
CHAPTER READING, PROBLEMS AND EXAMINATIONS - OUTLINE AND SCHEDULE
Chapter
Assigned Problems at end
Complete by:
of Chapter. (You should
also
try and do as many of the
problems in the body of
each
Chapter as possible. )
1, Carbon
15-24,26,28,29,30,31
Sept. 3
Compounds and
Chemical Bonds
2, Representative
19-37 (except 28)
Sept. 10
Carbon Compounds,
Functional Groups,
Intermolecular Forces
3, Introduction to
15-26, 28,29,31,33
Sept. 17
Organic Reactions,
Acids and Bases
4, Alkanes: Nomen-
19-24,26,27,29,30,31b,
clature,Conforma-
33,34b,35a,b,c,37,39a,b
tional Analysis,
40,41
Sept.
20
An Introduction to
Synthesis
EXAMINATION NO. 1 ON CHAPTERS 1-4
SEPT. 24
(6-9 P.M.) B-106 ANGELL
5. Stereochemistry:
Chiral Molecules
30-41
Oct. 8
6. Ionic Reactions,
Nucleophilic Subst.
and Elimination
Reactions of Alkyl
Halides
13-39
Oct. 15
7. Alkenes and
Alkynes, I:Prop-
erties and Syn-
thesis. Elimina-
tion Reactions of
Alkyl Halides
18-28, 30-43
Oct. 20
8. Alkenes and
Alkynes II: Add-
ition Reactions
21-48
Oct. 22
EXAMINATION
NO. 2 ON CHAPTERS 5-8
OCT 22
(6-9 P.M.) B-106 ANGELL
10. Radical Reactions 19,21,22,23,25 Nov. 5
11. Alcohols and Ethers
31-36, 38,39,40a,b,41a,
Nov. 12
42a-e,43,44,46a,b
12. Alcohols from
Carbonyl Cmpds
and Organometallic
Cmpds
11,12,13,14a-c,15c-e,
17,18,19a-d,20-24
Nov.
19
EXAMINATION NO. 3 ON CHAPTERS 10-12
NOV 25
(6-9 P.M.) B-106 ANGELL
THE COMPREHENSIVE FINAL EXAMINATION WILL OCCUR IN THE LECTURE ROOM AT A TIME TO BE ANNOUNCED.. BRING LOTS OF SHARP PENCILS AND A SHARP MIND.
Safety in the Chemistry 141 Laboratory
The organic chemistry lab can be a very safe place to work if safety precautions are always observed. Great care, thoughtful handling and knowledge of the characteristics of the substances you are working with are absolutely necessary in order to avoid accidents and injuries.
Potentially hazardous apparatus, as well as inflammable, toxic,
corrosive or otherwise injurious materials are often used. The following
rules and procedures will be observed at all times in the Chemistry 141 laboratory.
Please sign the sheet at the end of this safety section of the syllabus which
indicates you have read the rules and will follow them exactly. Hand
this in to me before you begin work in the laboratory.
1. Always wear safety goggles in the laboratory. Contact lenses are not allowed.
2. Do not let your skin come into contact with any chemicals. Many are caustic, toxic, allergenic, or have other deleterious physiological effects. Wear plastic or rubber gloves. If you spill any chemical on your skin, wash it off at once with soap and water. Be aware that some chemicals are absorbed rapidly through the skin (i.e., phenol). Do not inhale chemicals or put them in your mouth.
3. Never do chemical work or make apparatus set-ups except during a regular lab period when the instructor or a T.A. is present.
4. Performance of experiments not in the syllabus, or otherwise unauthorized experiments, is not allowed.
5. Playing around and pranks in the laboratory are strictly forbidden.
6. Removal of chemicals or equipment from the laboratory is strictly forbidden.
7. All accidents and injuries, however minor they may seem, must be reported to the instructor.
8. Be aware of all the dangers associated with any apparatus or chemicals that you are using.
9. Radioís, tape recorders, CD players or any other source
of extraneous
sound are not permitted in the laboratory.
10. Do not come into the laboratory under the influence of alcohol or other drugs.
11. Since clothing prevents a chemical from reaching the skin, cover your body properly. Shorts or sandals are not allowed. A lab coat is highly recommended.
12. Do not pipet by mouth. Use a rubber bulb if you need to.
13. When you leave your laboratory area, make sure that you have turned off all the water, gas, steam and electricity.
14. Drinking, eating, and smoking in the laboratory are strictly prohibited.
15. Know the location of the exits to the lab and the placement of the safety showers and eye wash fountains. Be aware of how to use these.
16. Do not build an apparatus which is a closed system. These have no outlet to the atmosphere and pressure can build up in them. They can explode.
17. Read labels on bottles VERY carefully. Similar names can be quite different materials (e.g., sodium hydride and sodium hydroxide.... or sodium sulfite and sodium sulfide).
18. NEVER use large mouth containers like beakers for flammable or volatile solvents. These should be kept in Erlenmeyer flasks or other small mouth flasks, and should be corked or covered with a stopper.
19. Do not heat inflammable solvents, even very small amounts, unless you have a condenser attached to the flask containing the solvent. Solvents should never be poured near an flame (i.e., a lit Bunsen burner).
20. Protect your hands with heavy gloves or a wrapping of heavy towel when pushing glass tubing or thermometers into stopper holes or rubber tubing. Lubricate the holes first with water or glycerine. Similar protection is also necessary when removing glass tubing and thermometers from stoppers or tubing. If the glass is stuck, use a knife to cut away the rubber.
21. Keep your working space, drawers, cabinet and shelf space above the bench clean and neat at all times, especially when you leave for the day. This is good laboratory technique.
22. Be very careful and do NOT touch equipment that has been heated (flasks, glass tubing, hot plates, wire gauze, Bunsen burner tops, etc.). Give it plenty of time to cool before you handle it.
23. Keep the hoods on high speed and the lab doors closed in order to insure adequate ventilation when working in the lab.
24. Waste must be discarded in the proper way. Some non toxic materials (like salt solution) may be washed down the sink drain. However, most of the materials will require special handling or treatment. Waste bottles will be provided in the hoods for many substances. You must take extreme care in putting materials in these containers in order to avoid creating reactive and explosive mixtures. Ask your T.A. or the instructor if you have any doubts.
25. In certain instances pressure can build up in stoppered vessels
(separatory funnels, flasks and bottles). This may be due to low-boiling
volatile substances or the generation of gases from reactions. If
low-boiling solvents (ether, methylene chloride, etc.) are being used, make
sure that you keep the system cool and/or vent it frequently by opening the
vessel. As noted above, chemical reactions can create heat and or gas,
both of which can result in a pressure increase. For example, mixing
acid with sodium bicarbonate in a separatory funnel generates copious amounts
of carbon dioxide gas which must be released. Vent the funnel very
often. Heat generated from reactions can vaporize volatile solvents.
This also can generate pressure.
IN CASE OF ACCIDENT
1. FIRE: Your personal safety and the safety of others is most important. Make sure everyone gets immediately out of the room and the building. Only after the safety of all is assured, should the matter of extinguishing the fire be considered. Because a few seconds delay can result in very serious injury, every person in the lab should plan in advance what he/she will do in case of a fire emergency.
If a personís clothing catches fire, you must provide immediate help. Prevent him/her from running, and put the person under the safety shower and pull the chain. Smothering the flame with a fire blanket or lab coats is less effective. Never use a carbon dioxide fire extinguisher on a person. This can result in severe and damaging frost bite.
2. CHEMICALS: If corrosive chemicals are spilled on the clothing, immediate showering with clothing on is the best immediate treatment. If chemicals are spilled on the skin, wash them off with large volumes of water. If a chemical is spilled in the eye, it should be washed out immediately at the eyewash fountain.
3. INJURIES: All injuries (burns, cuts, scrapes, rashes), no matter how minor, must be treated immediately by competent medical staff at the Student Health Center or the hospital emergency room. Report the injury to your lab instructor who will have someone take you or accompany you to the health center or emergency room if necessary.
Name(Print Clearly) ______________, ________
last name
first name
Campus or local address: ______________________________
Local Telephone ___________ Email address_________________________________
Home address and Telephone _____________________________________________
Last four digits of your social security number: ___ ___
___ ___
If you have previously taken and passed the lab part of Chem 141 or its
equivalent, indicate when, where and the teaching assistants name:
Your probable major:__________________________________________
Your present class (freshman, sophomore, etc.):______________
Disabilities which we should know about: _________________________
I will read the syllabus by Sept. 10, 2003 and will be aware of policies
regarding grading, missed exams, as well as class and lab attendance by
that time. I will, by September 10, 2003 be aware of my responsibilities
as a student in this class. I WILL, by September 10, 2003,
read the Safety in the Chemistry 141 Laboratory section of the the
syllabus and I will clearly understand my responsibilities in the organic
chemistry laboratory with regards to safety issues. I will follow
all the rules and regulations noted in the syllabus, and understand that
I will be removed from the course if I violate good safety practices repeatedly.
_______________________, ________
Signature
Date
PRINT OUT AND FILL OUT THIS SHEET FROM THE ONLINE SYLLABUS AND WRITE A SHORT PARAGRAPH TELLING ME A LITTLE BIT ABOUT YOURSELF (INTERESTS, BACKGROUND, HOBBIES, ETC.) TELL ME WHY YOU ARE IN THE COURSE, WHAT YOUR EXPECTATIONS ARE.