- Each lab period will begin
with a brief introduction of the experiment for the day (we call this the
pre-lab), including safety considerations.
You are required to have read the lab for that day ahead of time.
- Pre-lab quiz: To verify that you have read the
experiment for the day prior to coming to pre-lab, your instructor may
give you a brief quiz over the experiment for the day during pre-lab. This quiz will be worth up to 1 pt of
your 10-pt lab score for that lab.
- You are required to purchase
your own pair of chemical splash goggles and to wear those goggles at all times in the
laboratory. You may purchase your
goggles in the OCCC bookstore. If
you choose to purchase goggles elsewhere, they must be approved by your
professor. Woodworking goggles and
safety glasses are NOT acceptable. If your goggles have vent covers
that can be opened, they must be closed at all times during use.
- The OCCC Chemistry
faculty has a zero tolerance policy on goggle violations. Failing
to wear or removing your goggles during lab may result in dismissal from
the laboratory and a grade of zero for that lab. Repeated violations of the goggle or
safety rules and policies may result in a grade of “F” for the course.
PERSONAL ATTIRE Policy
The clothes you wear to lab must cover your torso and legs
and feet entirely. From the lab safety
“ a shirt with sleeves that covers the
shoulders and entire torso and either pants or a skirt that covers the entire
leg. Tank tops, tube tops, spaghetti
straps, midriff shirts, shorts, and short dresses are not acceptable. In general, wearing a T-shirt, jeans and
tennis shoes will be appropriate to meet the lab safety rules.”
that cover the entire foot, including the toes, the top of the foot, and the
heel must be worn at all times in the chemistry laboratory. Sandals, flip-flops, slippers, Crocs®, and
other open shoes are not permitted in the chemistry lab area.”
- If you
fail to wear the proper attire, you will not be allowed to attend that
- If you are more than ten minutes late for the pre-lab
lecture, you will not be allowed to do the lab. You will be
required to make up the lab or count it as a dropped lab.
- Laboratory work and clean-up
must be completed prior to the end of the lab period. Furthermore, you must inventory your lab
station’s three drawers and see that missing items are replaced before
leaving the lab.
- Lab reports (data sheets)
are due to your lab instructor at the start of the pre-lab discussion
period the following week. Lab reports turned in late are subject
to a 5 point penalty.
- You are required to complete
a minimum of 11 lab exercises with a score ³ 2 pts in order to pass CHEM 1215.
- Nov 12th is the
last day to withdraw from class without a grade. If you withdraw from the lab you also
have to withdraw from your lecture section. If you withdraw from your lecture class,
you also have to withdraw from your lab.
- The grades you receive for
labs will be transmitted to your lecture instructor. The lab grades will be included in your
overall grade for CHEM 1215.
- You should keep your graded
lab reports in case there are any questions about the accuracy of the
transmission of those grades to your lecture instructor.
Lab Grades -
are 13 lab exercises worth 10 points each.
reports (data sheets) will be submitted to your lab instructor who will grade
the reports. The lab instructor will
forward your lab grades to your lecture instructor at the end of the semester
for use in determining your final grade.
· Pass/fail requirement: You must complete and receive a grade of at
least 2 points on 11 of the 13 labs in order to pass Chem 1215.
There will be one week in the semester that may be
used to make up a missed lab, and we strongly advise you to complete all 13
labs and reports. Make-up labs are late labs and will be penalized 5 pts.
understand that the lab grade consists of 130 points. If you choose not to make up a
lab, that lab grade will be a zero.
Labs are due at the start
of the following pre-lab period. Late labs and make-up labs will be assessed
a five point penalty. Labs that are turned in after start of the pre-lab period
will be considered late, regardless of the reason.
Lab Report Grading Criteria
receive full credit, all questions on the data sheet must be answered,
appropriate calculations must be shown on the data sheet or on attached sheets
of paper (as specified in the lab instructions), results must be within the
expected range, and all calculations should be done according to the rules for
You can lose points on labs according to the
- Late lab or makeup
lab - 5 point penalty
- Incomplete lab report
(i.e. some questions or calculations omitted) - 1 to 4 point penalty,
depending upon how many calculations or questions are omitted
- Poor results - 0.5 to
2 point penalty, depending upon how bad the results are
- Calculation errors -
0.5 to 3 point penalty, depending upon how many errors are made
- Incorrect answers to
questions - 0.5 to 1 point each
- Incorrect use of
significant figures - 0.5 to 1 point penalty, depending upon how many
errors are made
Note: It would be relatively easy to fall below the
2 point minimum required for passing this class if you submit an incomplete
data sheet with a few calculation errors and poor results or incorrect
responses to questions. Submitting a late lab means that you should
take extra care in making sure the lab is complete and your calculations are
correct so that you do not fall below the 2 point minimum.
Reports – 15 points each
You are expected to INDEPENDENTLY write and submit
two formal lab reports during the semester.
Your instructor will identify the specific lab for which each formal
report is required and will provide you with the format for the formal lab
report. Each formal lab is worth 15