SPRING 2004
11:20 - 12:10 MTWF, MH 334
LECTURE INSTRUCTOR: W.E. Bentz;
Lab Instructors:
A Eklund, G. McGowan, J.R. Pipal
COURSE PHILOSOPHY:
It is the goal of this two-semester course to familiarize students with the basic principles of chemistry, to acquaint them with the properties of the common elements and their compounds, and to provide a brief introduction to organic chemistry. The topics include: stoichiometry, the states of matter, solutions and their reactions, chemical kinetics, equilibrium, electrochemistry, thermodynamics, atomic structure, the basic concepts of bonding, nuclear chemistry, and organic chemistry. The laboratory consists of basic experiments in stoichiometry as well as qualitative and quantitative analysis. The course is problem oriented and basic skills in algebra are required. Liberal Arts and Sciences students must have a score of 60% or better on the AU Math Placement Exam. Students who have had no high school chemistry should consult with the instructor before attempting this course. CH 105 - 106 is designed for all engineering students, students planning to major in one of the sciences and students preparing for admission to advanced study in the health professions. CH 105 or CH 115 is a prerequisite for CH 106.
Caution: Students who have
earned a D, D+, or C- for CH 105 or those who failed the CH 105 Final Exam
will have GREAT DIFFICULTY in CH 106.
GRADING POLICY
Your grade will be evaluated from the following:
Five 50-minute examinations = 450 points
About 6 scheduled quizzes = 100 points
Unscheduled quizzes =
100 points
Homework
= 75 points
Laboratory Notebook =
100 points
1 Two-hour Final Exam =
200 points (Thursday, May 6, 7:00 p.m.)
Total = 1025 points
GRADING SCALE
A |
90-100 % | B- |
70-74 % | D+ |
54-56 % |
A- |
85-89 % | C+ |
65-69 % | D |
50-53 % |
B+ |
80-84 % | C |
60-64 % | F |
0-49 % |
B |
75-79 % | C- |
57-59 % |
I expect regular attendance (90% or better) at lecture, quiz and laboratory sessions. There are several reasons why I think you should attend every class you possibly can.
The material that you learn in chemistry builds on a day-by-day basis. Each day new terms and ideas are introduced which are the basis for understanding what will be learned next. If you miss just one class, you will find that several things discussed during the next class you attend will be difficult to understand. If you miss two or three classes in a row, you will understand very little of what occurs during the next class. It is then very easy to conclude that the teacher is a poor instructor because you don't understand him. But is that really why you won't understand?
If you are enrolled in the College of Ceramics and are in class a total of 18 hours per week for the 28 week teaching year, you pay $21.40 per class hour as a New York resident, $29.50 per class hour if you are from out of state. Those enrolled in the other colleges with the same class load are paying $36.70 for each hour of class. Think of it as throwing that amount of money away every time you miss just one class.
General Chemistry Grades Earned 1972-2003
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It also turns out that there is a significant relationship between the number of classes missed and the grade earned in this course. The graph at right tabulates grades earned by 4412 students enrolled in Bentz's lecture sections over the past 31 years versus the number of classes missed. The average number of classes missed for each grade is also plotted (points on solid line). One might read the data as follows: 606 of 751 (or 81%) of those earning an A missed no more than 2 classes. Of the 311 who have failed, only six had perfect attendance, 147 (or 47%) missed 15 or more classes, and 206 (or 66%) missed more than 8 classes (two weeks) in a semester . The average number of absences for all students is 4.3 per semester.
The average grade of those students who missed no classes is 3.11 (better than a B), while the average for those missing 9 or 10 classes is 1.91 (less than a C). Only 4.8% of those who had perfect attendance earned less than a C, while 18.5% of all students earned less than C.
MAYBE YOU SHOULD HANG THIS BY YOUR ALARM CLOCK!
Finally, WHILE CLASS ATTENDANCE IS NOT A NUMERICAL FACTOR IN DETERMINING GRADES, THIS INSTRUCTOR IS NOT ABLE TO IGNORE IT IN DECIDING BORDERLINE CASES. You are responsible for signing the attendance sheet each class. Signing for another student constitutes academic dishonesty (see section 700 of Alfred University academic regulations, available at the Registrar’s office or through the AU web page following the following path: Academics -> Policies & Regulations (near the bottom of the page) -> Academic Dishonesty).
I AM NOT THE ENEMY:
Nothing would give me a greater pleasure
than to see each of you earn an A. This course is not graded on a curve.
No one has to receive a low grade. Take advantage of all of the opportunities
to get assistance as soon as it is needed. Come to class, problem sessions,
office hours and/or group tutoring. Everyone wants to help you. But you
must take the initiative to seek help.
LABORATORY:
Laboratory work is intended to reinforce
and extend material covered in lectures and the textbook. A set of pre-lab
activities must be completed before each laboratory and a laboratory
notebook must be kept. Specific requirements for the laboratory notebook
are given in your laboratory manual. If you are
too sick to come to laboratory, you must go to the health center.They
will determine if an excuse for that time is warranted. If
you know that you must miss a laboratory, arrange with your instructor
to attend another lab during the week. If illness or family emergency,
which can be verified by the Dean of Student Affairs, prevents you from
attending lab, you should arrange with your lab instructor to make up that
lab within one week. For each two (2) laboratories not attended or properly
completed, your course grade will be reduced by 1/3 letter grade. Since
separate exams and quizzes are not normally given in the laboratory, you
can expect from 40 to 60% of each lecture quiz and exam to deal with laboratory
work.
EXAMINATIONS: February 3, February 24, March 19(Fri), April 6, April 27
Five (5) 50-minute examinations will be given on the above dates. Regular
make-up examinations will not be given. A student who misses an
examination due to illness or other emergency must submit, in writing,
an excuse which is not only logical, but also verified by the Dean for
Student Affairs. If you are too sick to take an exam you must go
to the health center. Then tell them that they may tell me that you
were there. If you expect to miss an exam for a university activity
(athletic, musical, etc.) you must inform me 2 or 3 days before the event.
Failure to do so will result in no make-up exam or quiz. A student with
a valid excuse for absence will be given a make-up examination at the instructor's
convenience. A student missing an exam for a reason which is not logical--such
as oversleeping--will not be given a make-up exam but will receive a grade
of zero for the missed exam. To earn a grade of B+ or lower, your
examination percentage will be calculated by dropping the score of the
exam on which you earned the lowest percentage. To earn a grade of A
or A—, all five (5) exam scores will be used to calculate your examination
percentage.
QUIZZES:
Scheduled: Feb. 10, Feb. 17, Mar 5(Friday), March 30, April 13, April 20
Scheduled quizzes will be given on each of the above dates. No make-up quizzes will be given. In keeping with our attendance policy, not more than one quiz should be missed. A grade of zero will be recorded for all quizzes not taken. At the end of the semester, the lowest quiz score, zero or higher, will be disregarded. If more than one quiz is missed, zero grades will be used in calculating your quiz average.
Unscheduled quizzes (5 minutes in length) may occur on
any day during the semester. No make ups will be given for unscheduled
quizzes, either. The lowest unscheduled quiz will also be disregarded.
If more than one scheduled quiz is missed, zero grades will be used in
calculating your quiz average.
HOMEWORK:
Two homework assignments will be made each week. You must turn in for grading only one assignment of each pair (1 or 2, 3 or 4, etc.). The other assignment should, of course, be completed too. It is strongly recommended that you complete each assignment as soon as possible after it is made. The assignments must be legible and must follow the accepted homework format (see following page). Assignments must be submitted by 3:00 p.m. on the due date.
CHEMISTRY 105-106 SAMPLE HOMEWORK
PAGE
NAME: John Q. Superchemist
This information must appear on
CHEM NO: 401 (see list in MH 222)
the first page of each assignment.
ASSIGNMENT NO: 30
Your name and chem number
DATE DUE: 31 February 1999
should appear on each page.
PROBLEMS ASSIGNED: Handout 1, 3
Handout 1. A bottle contains elements A and B so that there are 2 atoms of A for every 3 atoms of B. The total weight of the sample, of which A contributes 13%, is 25.0 g. If the atomic weight of A is 67.0, what would be the atomic weight of B?
We need atomic weight of B, ie either or
25.0 g mixture x = 3.2 g A present in the bottle
\ g B in bottle = 25.0 g total - 3.2 g A = 21.8 g B
moles A = 3.2 g A x = 0.048 mole A. Have 2 atoms A for 3 atoms B
or 2 mole A for 3 mole B
mole B = 0.048 mole A x = 0.072 mole B
Box answersin RED pencil or ink
Atomic weight B = = 3.0 x 102
Handout 3. How many grams of Al2O3 can be obtained from 21.6 g of aluminum?
The balanced equation is 4 Al + 3 O2 Æ 2 Al2O3
This states that 2 moles Al2O3 are formed from 4 moles Al.
\ gAl2O3 formed = x x = 40.8 g Al2O3
Always include units with the answer. Preferably, use units through the problem.
NOTE: Each step is to be set up but multiplication and long division operations (i.e., arithmetic steps) need not be shown. The set up and the answer are the important things to include on homework assignments.
Homework problems should appear in the order assigned. (If a question is out of order, indicate where it can be found.) Do not turn in part of an assignment one day and the rest another day. Never put two or more assignments on the same sheet of paper.
Assignments must be submitted
on standard 8 1/2 x 11 inch paper and must be legible. If you tear
the paper from the pages of a notebook, you must remove the ragged edge.
CALCULATING DEVICE POLICY:
Since CH 105 - 106 is a problem-oriented course, non-programmable, pocket-style calculators are needed during laboratories, quizzes and examinations. All students are encouraged to master the use of one of these devices. Calculators need only be capable of simple arithmetic calculations, determining logarithms and performing exponentiation. The SHARP EL-531V scientific calculator, available at the College Book Store, is a suitable calculator for use in this course.
The use during a quiz or examination of ANY information programmed by the student into a calculator constitutes academic dishonesty. A student who brings into the quiz or examination room potentially useful material attached to a calculating device will be charged with academic dishonesty and will lose the privilege of using that device for the remainder of the academic year. Each infraction of academic dishonesty will result in failure on that quiz or examination and will be reported to your Dean and the Provost in accordance with section 700 of the Alfred University academic regulations. Please note especially section 702.2 which states that a student found guilty of a second offense of academic dishonesty during his/her career at Alfred University will be dismissed.
On most quiz and exam questions, a correct set up of a problem may be worth 90% of the credit for that problem. The numerical answer will be worth only 10%. NOTE: This means that SET UPS MUST BE GIVEN FOR ALL PROBLEMS. If only the correct answer is given, 90% of the credit for that problem will be deducted. A wrong answer with no set up will receive no credit. "I forgot my calculator (or slide rule)" or "The batteries in my calculator were dead" will not be an accepted excuse for poor scores on quizzes or exams. It is your responsibility to have your calculating device in good operating condition.
On each examination certain problems may be designated as "Half or More". On these problems, no credit will be awarded unless the problem is at least half correct. An outline of the plan to solve the problem must be included to receive 50% of the credit. Credit of 50 to 100% can be earned on such questions.
Just as good mathematics is required
on numerical problems, good writing is necessary on essay questions and
other written material submitted for grading. When such items are poorly
written, up to 10% of the credit may be deducted.
PROBLEM SESSIONS
A regular problem session will be held each week in MH 334 on Mondays at 5:20 p.m. Attendance is entirely voluntary. During these sessions, problems will be worked which students have attempted but have been unable to complete. In other words, you should try problems before you attend. These sessions should not be attended in lieu of studying.
ANSWER KEYS:
On-Line MATERIALS: Blackboard
This course has an active Blackboard system
account. To access this from any browser,
use http://blackboard.alfred.edu or use the
"GoTo" pull down window on the AU web page and select Blackboard 6.0.
Your login name will be your "Outlook account"
name and your initial password is the last four digits of your social security
number.
After login, select "Personal Information"
below MY ALFRED and change your password. Also update other personal information.
Be sure to change your preferred e-mail account,
if it is not Outlook.
Next, select CH 106 under "COURSES".
The following course materials are available
for the course under the active parts of Blackboard at present.
ANNOUNCEMENTS: This will be my
primary method of getting special messages to you. I recommend that you
check it at least once per week.
COURSE INFOMATION: The complete course syllabus is available.
FACULTY INFORMATION: My telephone
number and office location are here. There are also direct links to my
e-mail and office hours.
COURSE DOCUMENTS: There is a link to electronic reserves here.
ASSIGNMENTS: All homework assignments will be posted here.
COMMUNICATIONS: A class roster is here and an easy method to e-mail other members of the class. Be sure that you have entered your preferred e-mail address after login. (Note: "All users" is everyone in this class only.)
EXTERNAL LINKS: Occasionally I will put links here for items of interest for this course. I'll use the announcement page to alert you to these links.
TOOLS: A calendar for the course
(exams and scheduled quizzes) is all that is activated right now.
TO ACCESS COURSE MATERIALS THROUGH MY WEB PAGE:
You must have "Adobe
Acrobat Reader" on your computer to read these materials.
1. Go to my web-page in your Web Browser at "http://people.alfred.edu/~fbentz/"
2. On my web-page, scroll down and select "Courses
Taught" near the lower left side.
3. Under CH 106 select "Homework Keys", "Exam Keys"
, "Former Exams" or "Quiz Keys"
4. Read the rules, then click "accept", if you do agree
to abide by the rules.
5. Choose what you wish to look at; e.g.,
if you have selected homework keys, choose the due date you wish to view;
if you have selected quiz keys, choose the quiz you wish to view by date given;
if you have selected current exam keys, choose the exam you wish to view by
date taken.
if you have selected former exams, choose the exam you wish to view by number.
6. If nothing appears, try shrinking the Netscape window,
(upper right corner).
7. When the material appears on the screen, you may view it
or print it.
8. Please do not hesitate to ask for help at either one of
the AU Libraries
(Scholes - 607-871-2492 or Herrick - 607-871-2184)
TO ACCESS COURSE MATERIALS THROUGH THE e-Res WEB
PAGE:
You must have "Adobe
Acrobat Reader" on your computer to read these materials.
1. Go to Electronic Reserve web-page in your Web Browser at
"http://eres.alfred.edu"
2. Select "Electronic Reserves and
Course Materials"
3. Scroll to "Bentz"
under the "select an instructor" box and the push the
"GO" button next to the box.
4. Select "CH 106" .
5. Read the rules, then click "accept", if you do agree
to abide by the rules.
6. Choose which item you wish to look at; most homework and
quizzes are listed by date.
7. If nothing appears, try shrinking the Netscape window,
(upper right corner).
8. When the material appears on the screen, you may view it
or print it.
9. Please do not hesitate to ask for help at either one of
the AU Libraries
(Scholes - 607-871-2492 or Herrick - 607-871-2184)
OFFICE HOURS:
During the following times, I will regularly be available (except
in case of emergency) in my office by appointment. You may sign up for
a 20 minute appointment outside MH 214. Walk-ins are possible, but you
might have to wait.
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If you wish to see me at any other
time when I am not in class, please make an appointment personally.
SUGGESTIONS FOR STUDYING CHEMISTRY:
In college you will not be tested on only those problems which you have already solved. You will also be expected to apply one or more principles which you have learned to problems which you have never seen before. The purpose of education, after all, is to prepare us to face new situations. On my exams, about 60% of the credit (enough to earn a C) will be assigned to problems similar to examples presented in class or the text and/or encountered in the homework. The remaining 40% of the credit will require application of the principles you have learned to unfamiliar problems. Each exam will have questions requiring a knowledge of material covered on all previous exams. Cramming for exams the night before, followed by forgetting the material immediately, will not be an efficient method of study.
I suggest that you study some chemistry (and each other subject) every day. Late night cramming will not be necessary then. Ideally, you should learn nothing new the night before an exam. You should instead review all that you have already learned and then get a good nights rest.
One final point. This year's exams will not be the same as last year's or those on file in libraries or some fraternity or sorority house. Such exams may give you an idea of the type of question I might ask. But DO NOT use them as a study guide.
Many students have found the following to be useful guidelines for studying chemistry.
1. Skim new material the day before lecture or demonstration.
2. Read-over and add-to class notes the same day taken.
3. Start homework assignments and carefully re-read textbook material as soon as possible after class.
4. Never spend more than 20 minutes at one time on a homework problem if you're not making any progress.
5. When studying always ask yourself whya problem is solved as it is. Don't just memorize how to do problems.
6. Seek help from the instructor or
at problem sessions only after you have tried problems.
REQUIRED TEXT: (Available at the College Book Store - Powell Campus Center)
Brady, Russell & Holum, "Chemistry: Matter and Its Changes"; 3rd. ed., 2000
W.E. Bentz, ed, "Laboratory Manual
for General Chemistry", 3rd ed., 1996
COURSE OUTLINE
CHEMISTRY 106 -- SPRING SEMESTER -- 2004 -- BENTZ
Text: Brady, Russell & Holum, "Chemistry: Matter and Its Changes"; 3rd. ed., 2000
Lab Manual: W.E. Bentz, ed., "Laboratory Manual for General Chemistry", 3rd. ed., 1996
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| CLASS | KINETICS
Chapter 13 |
KINETICS Chapter 13 EQUILIBRIUM-GENERAL Chapter 14
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February 3-- EXAM 1 EQUILIBRIUM-GENERALChapter 14 ACIDS and BASES
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| LAB | 15. Chemical
Kinetics
Rate of Decomposition of Hydrogen Peroxide |
14. Anion Tests and Reactions | 14. Anion Tests
and Reactions
(continued) |
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| CLASS | ACIDS and
BASES
Chapter 15 ACID-BASE EQUILIBRIA
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ACID-BASE
EQUILIBRIA
Chapter 16 (sections 3,4,5) |
February
24 - EXAM 2
ACID-BASE EQUILIBRIA
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| LAB | 16. The Formation
Constant of
Fe(SCN)++ |
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New Experiment
18.5. Titration Curves |
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| CLASS | SOLUBILITY
EQUILIBRIA
Chapter 17 (sections 1,2,3)
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REDOX REACTIONS
March 19- EXAM 3
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ELECTROCHEMISTRY
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| LAB | 19. Preparation and Testing of Buffers | 20. A Quantitative
Study of Solubility
Product: Ksp of Lead Chloride |
21. KMnO4
as an Oxidizing Agent:
Ksp of Strontium Oxalate |
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| CLASS | ELECTROCHEMISTRY Chapter 19 |
April
6 - EXAM 4 THERMODYNAMICS Chapter 18 |
SOLUTIONS
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| L | 22. Identifications
of Cations using
NaOH and NH4OH |
24. Identification
of Simple Salt
Unknowns |
25. General
Cation Separation Scheme
Analytical Groups I -V |
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| CLASS |
METALS Chapter 20 (sections 2,3,5,6,7) |
April
27- EXAM 5
METALS
NUCLEAR CHEMISTRY
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May 3- May 15-Graduation |
| LAB | 28. Preparation of K3Fe(C2O4)3 | 29. Half Life
of 137Ba(m)
Laboratory Check out |
Thursday, May 6, 2004 7:00 p.m. |