Slide 1
11CHE 133 Pre-Lab LectureIf you are registered , waitlisted, or
wish to add CHE 133Sec 01Stay for thispre-lab lectureWelcome to
2
Wl ansr al UR ?s 2This slide is meant to deflect most of the
questions that students may raise before you start.You can show
this slide until you begin the lecture
Potions and Spells 1CHE 133
hogwarts
crosslisted with
33An attempt at Harry Potter humor. Students seem to like this.
It is often mentioned in course evaluations.If you are on wait
list, wish to add , are registered & wish to change Lab
Sections*
1. Stay for this pre-lab LECTURE. 2. Go to LAB section you wish
to join at its scheduled first meeting.what to doThis Week:All Labs
& pre-lab Lectures meet4Next Week:No Labs meet. Friday pre-lab
Lecture meets.If you are registered, do not drop yourself. That
will be de-register you.4This addresses the students who will try
to add or transfer into the course as the lab sections meet. Even
though they may not be able to be added, we encourage them to
engage in the above activities. If the students ask about the
waiting list, tell them that they will be added to the list after
they go to Dr. Akhtars office. We will adhere to the 144 students
per section rigidly. Please mention that if they are registered and
want to change sections, they should NOT DROP themselves on Solar.
Akhtar will transfer them. If they drop, they will not be able to
re-register and may also be dropped from blackboard.
If students are registered and want to change sections, they
must NOT DROP themselves on Solar. They will not ba able to
re-register. Akhtar will transfer them.Todays Pre-Lab LectureWheres
the action?Whos who?What do you need to buy?What are the course
rules?How do you get help?How do we grade?Will you be safe? What if
youre absent?Can you get by with a little help from your friends?Do
you need a lawyer? Is there a course Web site?What will you do in
the first lab meeting?
Today55An outline of the lecture
U R HERE
SACLIBRARY
UNION40o 54 47 N73o 07 19 W40o 54 59 N73o 07 26 W6Wheres the
Action?CHEMGrad Chem is only 12 (angular) sec North of Javits and 7
sec West. Joke: Therefore, since 12 + 7 = 19 sec, (or (144 + 49)1/2
= 13.9 sec as the crow flies) students should never be late for
class if prior class is in Javits.67
Help Room24 students / lab
Floor Plan 2nd Floor, (Chemistry)A photograph of our modern
laboratory facilities.7Prof. Stanislaus Wong,Pre-lab Lectures &
Lab Secs 2 & 7
Dr. Mohammad Akhtar, Coordinator of LaboratoriesLab Sec 68Whos
Who Labs / Lectures
Prof. Robert Schneider,Lab Sec 4Dr. Bradford Tooker,Lab Secs 3
& 5
Prof. Schneider always conducts the lab in formal dress.8
Ms. Lobna Kahek Preparation & StockroomWhos Who - Support100
mL86 L
X 86486 L 1.4 Kegs9
86 L 43 2 L Bottles
9If each student uses 100 mL, the total will be as shown. The
picture only shows 37 bottles.We must constantly remind students
to:take only as much of the reagents as they needkeep the
laboratory workspaces neat and cleanThe picture only shows 37
bottles
Pix of Last Years TAs
10Puss in Boots always wears Goggles. The audio is from Shrek 1.
(it only plays if the podium computer is set up for audio)
CHEMISTRY 133 Laboratory Manual (Publ: Hayden-McNeil) 8th
Edition Prescribed Lab NotebookCombination
lockTowel[Calculator]Must acquire before second lab meeting:
CHE 133 Supplies:
Prescribed Safety Goggles
Remote Entry Pad(Turning Point)Course RequirementsMagic Slide
Rule for Hogwarts Students
11
11The supplies items are available separately at the
bookstorePlease mention that we do not provide paper towels in the
lab hence, the towel is required.Some students may have older
eInstruction clickers. They are not compatible.
The Bookstore has high quality (and comfortable) goggles for
~$20. We recommend those if students will take many lab courses.
There are cheaper ones (but they must meet ANSI standards). The
cheap ones are less comfortable. More about goggles later.Should be
able to reconstruct data sheets from notebook
entries!!!!!!Composition book, Lab notebooks must be used ONLY to
record data collection & analysis Not for lab lecture notes Not
for other subjectsRecords must be kept in INK!Notebook is for
real-time observations, not diary to be reconstructed from
memory.Line out errrorrs! No White Out
NoErasures
By YouBound, Lab NotebookPre-numbered pagesNot Spiral
5 points out of each exercise grade is awarded for proper use of
notebook.12
YES!The rule is: You write down stuff!Notebooks do not need to
be neat. Datasheets must have no corrections. 12Students will have
to pre-number pages themselves.It is worth mentioning here that
reports (in the form of data sheets from the manual) are turned in
at the end of the lab. Also mention that in addition to its
intrinsic importance, the lab notebook is a way of insuring that we
can reconstruct student results in the rare instances when a lab
report might get misplaced.Neatness of data sheets will be
emphasized by grades. The datasheet is like a publication!Notebooks
are reviewed, but not collected. Results are reported through data
sheets.Neatness of datasheets will be emphasized through
grades.EXERCISESNOT designed to demonstrate, confirm or verify
Principles! Knowledge of Modern Terminology:Mastery of Modern
EquipmentIdeas, ConceptsPowers of ObservationPowers of
DeductionExperimentalSkills
Forsooth! Ye shall not dispense water into oil of vitriolNOT
designed to demonstrate, confirm or verify principlesActivities
that DO require your developing:What will we
do?ArithmeticSkills
EXPERIMENTSP = nRT/vv = nRT/Pn = Pv/RTE = q + w
13T = Pv/RnPv = nRT13The font in the terminology example is Old
English. It was meant to look old.As examples of principles, I show
the so called 5 laws of ideal gas behavior which is the gas law
written 5 different ways (and the 1st Law of Thermo).133 is not
correlated with CHE 129, 131, 141Will use concepts that have not
been covered in lecture course. Will explain them as required. 12
Lab meetings:Lab and Lecture Courses are separate!Volumetric
analysis12 Check-outSpectroscopyOrganic synthesisGasometric
analysisChromatographyGravimetric analysisInorganic synthesisAs are
shown on lab section schedules1 Check-in3 - 11 Household "CHEMICAL"
Exercises 2 Laboratory measurement10 ExercisesLab is Separatevs
Separate Grades!To be distributed in Lab
14
14It is worth pointing out that since the lab is a separate
course, the students receive a separate grade. Its surprising how
many of them dont realize this.The students will be given a
schedule specific to their lab section IN LAB. They should be
encouraged to keep that schedule in their manual.What Contributes
to Your Grade?6Preliminary Exercises@553304Test
Exercises@1054202Quizzes@ 501001Comprehensive Quiz@ 10010010Lecture
Questions@ 55023Total1,000Grading15Given in lab on last day of
labGiven in labOn the web Grading BasisAlso in lecture
notes15SUSB-001 has all of the course policies. Students are
encouraged to read it and be familiar with its provisions. Most of
them dont.
Emphasize that Final Quiz is given during class. An earlier
versioin of the Final exam schedule showed 133 as having its final
during final week. That was and error!GRADING, contd: Preliminary
exercises (55): quality of reported observations & analysis
(35) neatness of datasheets (5) adherence to safety practices (5)
proper use of lab notebooks (5) answers to pre-lab questions
(5)
Test exercises (105): the above PLUS evidence of proficiency in
technique, usually measured by ACCURACY & PRECISION in
determining an unknown (50)Grading Prelim/Test16Absence on any
graded item results in 016This explains the grading basis for the
major items. This is also on the Web.Absences and
make-up:Unanticipated Absences:
Anticipated absences:
Students are responsible for information presented in lab
lectures, whether present or not (e.g., on quizzes)Multiple
absences are best remedied by dropping courseAll lab sections are
filled. Room only if absencesMake up of exercise or quiz is
generally not possible. After-the-fact written documentation is
requiredMust give PRIOR NOTICE & written documentation
Absence from 4 or more exercises will result in an F
Excused absences are only those justified by a note from a
doctor, lawyer, judge, parole officer, etc.17Grading &
Absences17Written documentation is preferably a note written by an
M.D. with a different last name. The note about 4 or more absences
should be emphasized.18
FrequencyNumerical GradesNo! You perform on a curve!Do We Mark
on a curve?We dont use a curve. Students perform on a curve as
shown.The graph shows the actual data from Fall 2011. The curve is
the least squares best fit to a gaussian. I have purposely not
shown the values along the abscissa.18LETTER GRADE DISTRIBUTIONFALL
2011Grade Cutoffs:A- > 90% of 1000 = 900 C > 70% of 1000 =
700B- > 80% of 1000 = 800 D > 60% of 1000 = 600DeFerred
SuccessFail1919Grading is on an absolute scale. It is based on many
years of comparable data. The cutoffs may be adjusted slightly, but
they will be very close to those shown and never higher. We dont
ever share the actual detailed cut-off numbers with the students.
It makes for endless arguments.Joke: F=DeFerred SuccessOr, for
Hogwarts Students, aCertificate of WizardryGrade Guidelines:A- >
99% of 1000 = 990 C > 70% of 1000 = 700B- > 80% of 1000 = 800
D > 60% of 1000 = 600Hogwarts Grades20
20Another attempt at Potter humor. through visualor oral cues;
through tactileor kinesthetic cues; aloneor in small or large
groups; in a noisy or quiet environment; through analysis or
repetition;Labs require, provide & measure combined skill
sets.
dexterityknowledgecareDifferent Students learn differently
organization* bum rap : a false accusation, or an injustice21
Lectures are given a bum rap *!Im not sure bum rap is a common
colloquialism anymore. This tries to justify lectures. Cause and
effect notwithstanding, students who attend lectures earn
significantly higher grades. As shown on the next slide.
2122Points out of 950*# of Lectures AttendedGrade = 415 + 38 L *
Excludes lecture points Grades vs Lectures graphThis is a plot of
the final numerical grades (excluding lecture grade) vs number of
lectures attended. Since 4 are excused, data for fewer than 4
lectures are not shown. Even if we dont invoke cause and effect,
the correlation is dramatic.22Reasons to come to Lectures
Lectures are sometimes fun!
Lectures advise you of background, changes in procedures and
safety matters. Lecture Questions: Answerable by attending
lecturesWhy LecturesLectures dont increase workload
23
23A picture of one of the lighter moments during lecture.
Humphry Davy is working the bellows! Gillray is the painter. Count
Rumford is at the doorway.24If you already have your Turning Point
clicker,please set the channel to:
41
Set Channel 41This is to let the students who already have their
clickers see how they work. 24I have registered my student response
in Lecture 01 of CHE 133. 25
YesNoMaybeI dont knowWhats a response pad?A sample of what a
lecture question looks like. Just checking to see who has
registered pads.
25If you did not answer TRUE, be sure to register your clicker
in CHE 133 before the next scheduled lecture.Q1 Registered?If you
answered TRUE, welcome262627To register your pad you will need:
your Net ID and password - for logging into Blackboard, your
device ID a connection to the internet
To register your pad:
Log into Blackboard at blackboard.stonybrook.edu
Click on link for appropriate LECTURE section of CHE 133 on
right. In left-hand navigation panel, click on Tools, Click on
Turning Point on the page that appears. Enter your device ID (on
lower back of clicker) - twice Click on SUBMITHow do you register
your clicker?These instructions are on the course web site.
http://www.ic.sunysb.edu/Class/che133/turningpoint/tpinstr.html27
2810 lectures @ 5 points (maximum)2 points for attending and
answering all questions 3 points for answering all questions
correctly point for each wrong answer 1 point for each un-answered
questiondead batteryMy dog ate my clickerlost clicker
forgot clicker
broken clickerLecture GradesIf you miss a lecture, you can
attend the alternate one.You are excused (i.e., earn 2 out of 5
points) for 4 of 10 lecturesbutWe will accept 0 (zero, cero, null,
, , ) excuses for not having answered questions in lecture28Strong
emphasis on zero excuses!29Lecture NotesFlow ChartsConcept
MapsLecture VideosOffice HoursHelp Sessions
Web Supplements
What Help is Available?The next few slides should be shown
quickly. They just repeat this list. They can probably be skipped
if time is slipping away.2930The lecture notes are intentionally
incomplete.
They do not include: background information animations most
images They are not a substitute for taking notes during
lecture.
Recommend you print lecture notes before attending and annotate
them during lecture*.* between facebook and twitter updatesLecture
Notes3031Flow charts are intended to help you plan your lab
activities by managing your time efficiently.
They usually point out alternate sequences of activities than
those shown in the manual.Flow Charts3132Concept maps are a device
that can help you evaluate your depth of understanding of what you
WILL DO in the laboratory (as well as in other courses).
Concept Maps3233The course syllabus web page includes large
numbers of links to supplementary information about the subjects of
the exercises.
These links are intended only for students who are particularly
interested in certain topics and would like a more detailed
description.Supplements on Web3334Videos allow students who have
missed some aspect of a lecture to review that segment.
Lecture VideosVideos of Friday lectures will usually be posted
by Sunday morning.34Help Sessions
TAs conduct help sessions, Monday - Thursday, 12:00 PM - 3:00
PM
Individualized meetings to help resolve questions or
uncertainties about:Laboratory background &
proceduresLaboratory calculationsPre-laboratory questionsHelp
Sessions are most usefulBEFORE you come to the laboratory /
lectureBUTAFTER you have studied the relevant materials
Help Room is 215 Grad ChemHelp Sessions35Help Session Schedule
will be distributed in lab35A schedule of help sessions will be
distributed next week in lab. They are conducted in Room 215.36The
faculty have posted office locations and office hours. Other times
are available by appointment.
We welcome your questions about Chemistry.
Office Hours36WebCourse Materials accessible at:Includes:
schedule/syllabus partial lecture notes for exercises flow charts
for exercises links to full lecture videos solutions to some
pre-lab problems grading policies other good stuff
Web37http://www.ic.sunysb.edu/Class/che133/37The posted lecture
notes are NOT the complete powerpoint presentations, but summaries
in pdf with no animations and without most graphics. Students
should be encouraged to take notes during lectures. Some critical
information not otherwise available is shown during
lecture.http://www.ic.sunysb.edu/Class/che133/38
Course Home Page3839Course Web Page:
www.ic.sunysb.edu/Class/che133/
Grading: www.ic.sunysb.edu/Class/che133/grad133.html
Lecture Grades:
www.ic.sunysb.edu/Class/che133/grading/lecturegrades.html
Make-up Policy:
www.ic.sunysb.edu/Class/che133/policies/make-up.html
Lecture Notes:
www.ic.sunysb.edu/Class/che133/lectures/syllabus133.htmlImportant
Web Pages39
We use Blackboard for:important announcements,Clicker
management, and Lecture & Course Grade
informationhttp://blackboard.sunysb.edu/Blackboard
40The e-mail address we use to reach you is the one in
Blackboard. Make sure it is correct!40Blackboard will be used for
general communication with students, including grade
information.You will often work in pre-assigned groups. Each
partner must assume individual responsibility for what is done.
A common grade is assigned for any common RESULT but not
necessarily for overall exercise.
Each submits an INDIVIDUAL REPORT with independent presentations
and analyses of the observations.
Grades of team members may differ because of data format,
clarity or completeness of report
If in doubt about some aspect of the exercise, repeat
measurements or observations yourself!IndependenceTeamwork is
essential, it allows you to blame someone else.
4141Since they work in groups, a students grade sometimes
depends on data collected by a colleague. The point of the last
item is that if they have doubts about the accuracy of data they
have not determined themselves, they should repeat the measurement.
The labs generally leave enough time for this.
only acceptableAsk instructor BEFORE doing itETHICAL STANDARDS42
Plagiarism (presenting others work as yours) Unauthorized
collaboration on exercises or quizzes Fabrication of data
(dry-lab-ing) Removing quizzes from quiz room Taking a quiz in a
section other than yours Using a response pad other than your
own
are taken seriously and can result in DISMISSAL
If you are unsure about whether a particular practice is
permissible,Honesty is thepolicybest42I make up several versions of
quizzes and we use two per section. The questions necessarily tend
to be similar from one quiz to the next. If an early section quiz
circulates, the later sections can get an unfair advantage.Taking a
quiz in a section other than yours means without permission43The
substances we use in the course are primarily
household chemicals
such as:household43
Chemical PixHyperhydration, And, of course, the common
solvent:Dihydrogen Monoxide44Hazards: Drowning44
Safety
45SafetyStony Brook takes safety very seriously andhas an
excellent record.SAFETY = COMMON SENSE2.8 Million people/yr
involved in household accidentsPeople dont always exercise common
sense
GLASS: Dont cut yourself. Use broom & dustpan available in
each lab
HOT OBJECTS: Dont pick them up withbare hands
45The first lab meeting involves a lot of safety
information.
Safety
SAFETY DEVICES: TA's will instruct you on the location and use
of safety equipment, including: safety showers, eyewash fountains,
fire extinguishers, Equipment
46
CLOTHING: No open footwear;
No exposed skin other than arms and head.46REAGENTS: while most
are household materials, handle them in accordance with
instructions. Take special note of hazard warnings.
EYES:
YOU MUST WEAR SAFETY GOGGLES IN THE LABORATORY AT ALL TIMES!
(State Education Law)
It is your neighbors technique we are concerned with, not
yours
As part of next weeks exercise, you will be asked to read and
sign a SAFETY AGREEMENT
Eyes
47Bookstore goggles are high quality (comfortable, etc.) but
cost ~$20. We recommend these if you will take more labs. If not,
cheaper goggles are available, but they must be splash goggles that
comply with ANSI Z87.1 47Points will be deducted if students do not
wear their goggles at all times.They must be the prescribed
goggles. No safety glasses with side shields, etc.The Seawolves
Market may have some approved, but better quality, goggles that
students who will take a lot of labs may wish to purchase...For all
general, all organic/inorganic chemistry instructional labs, all
persons in the laboratory must wear5 point penalty for not wearing
goggles(20 points if observed by Safety Committee member)
5.4 - Eye Protection It is the responsibility of each instructor
to enforce this policy; alternate forms of protection are not
permitted. at all times, even when not performing a chemical
operation. Xchemical splash goggles,not safety glasses or
spectacles,CHP48Chem Dept CHP
SafetyCommittee48The department safety committee does periodic
checks of the laboratories.This Week:Read: SUSB003 Intro to Lab
Measurement Before Next Lecture, [Try to] Complete Pre-lab
assignments SUSB- 003 AND SUPL-001Read: to learn from what one has
seen or found in writing or printingRead: SUSB-001a, SUSB-002
SUPL-001 Analysis of Experimental Reliability
Assignment4949Note that the reading and pre-lab assignment
includes 2 modules from the lab manual.ANY?
QUESTIONS5050The students will probably be walking out of the
room before you can show this slide.A group will come up to you
with a variety of administrative questions. The best advice is to
tellthem to go to the lab where all such questions will be
addressed. All registration issues MUST be handled by Dr.
Akhtar.515152The rest are extra slides used in past
lectures5253
5354
54
The objects of study in CHE 133 & 134 are generally everyday
materials - often disparagingly called
"CHEMICALS"
Chemical-free sunscreenChemical-free disinfectantChemical-free
thermal underwearChemical-free home cleaningChemicals55
Manufacturers proudly market:
55This, and the next few slides, try to address the increasing
use of chemical as a pejorative term.
INGREDIENTSPurified Water Cocomide Propyl BetaineVegetable
Glycerin Peppermint Oil Fennel ExtractHops Extract Balm Mint
Extract Olive Leaf Extract Ginger ExtractMistletoe
ExtractAllantonin (sic)Citric Acid Niacin Comphrey ExtractLemon
Grass OilBurdock Root ExtractSage ExtractRosemary ExtractMajor
chemical components of peppermint oil are: menthol, menthone,
1,8-cineole, methyl acetate, methofuran, isomenthone, limonene,
b-pinene, a-pinene, germacrene-d, pulegone. &trans-sabinene
hydrateFDA : Reports clearly associate oral exposure of comfrey
& its pyrrolizidine alkaloids with the occurrence of liver
disease. 56Natures Formula 1What the label says below is contains
no: sodium lauryl sulfate, olefin sufinates (sic they mean
sulfonates), propylene glycol
56
This body lotion contains: glycol stearate, ethylene brassilate,
ethylparaben, phenoxyethanol & tetrasodium EDTAWhats it
called?Natures FormulaNatures Formula 25757Naming chemicals does
not make them EVIL - again!Luann & Delta
Whats it called?MilkNatures Formula 3 - Milk58This stuff
contains galactopyranosyl d- glucopyranose, glyceryl myristate,
esters of cis & trans oleic acid, alpha casein, & calcium
phosphate
Naming substances makes them neither good nor bad58Naming
chemicals does not make them EVIL and again!Luann &
Delta2-methylfuran furfural 4-methyl-2,3-pentanedione 2-butanone
pyrrole ethyleneglycol diacetate 2-methylbutanal pyrazine
2,6-dimethylpyrazine 2,5-dimethylfuran furfuryl
acetate2,5-dimethylpyrazine 2,3-butanedione 2-methylpyrazine
3-methyl-1-hydroxybenzenepyrrolidine 2-butanol-3-one
1-(2-furyl)-2-propanone 2,3-pentanedione 1-propanol-2-one furfuryl
methyl ether 2-methylthiophene 2-acetylfuran5-methylfurfural
trans-2-methyl-2-butenal furfuryl formate furfuryl alcoholWould you
drink any beverage that listed the following major
constituents?Odds are that you did!
59The ingredient list is some of the flavor components of
coffee. 5960If you take away nothing else from your CHE 131/133
experience, I hope you will understand that the words
CHEMICAL*
are not value judgments.* Both the noun & adjectiveNeither
are the words:naturalorganicor
60
