Lipid Written Signature Assignment v5
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Chemical Thinking
Lipid
Written Signature Assignment
v5.5|
1
Lipid
Written Signature Assignment
Your name:
Your email:
Your lab partner’s name(s):
Your lab partner’s email(s):
Your lab instructor’s name:
Your lab section:
All work must be
very neat
and
organized
. If you need to collect your thoughts, please use a separate sheet of paper. Written Signature Assignments are
an
individual
effort
for
sections 4 - 8
of the present document (while sections 1 - 3 are a group effort). Please individually submit your completed
document to the lab
Lipid Written Signature Assignment
D2L DropBox folder before
the scheduled end of lab.
Always check to confirm the correct
document/file has imported to the correct lab D2L Dropbox folder –
no excuses.
Submission to an incorrect Dropbox folder will be subject to a 1-point
penalty.
If you submit an unintended document, or need to update a submission, you can always resubmit so long as you are not past the deadline
. If
you submit the wrong document and fail to realize this until after the deadline, a resubmission cannot be accepted. So please be careful and always
double check!
1.
Overall Project Goal (1 pt)
. In complete, well-written sentence(s), summarize in your own words the
overall goal(s)
for the
Lipid Project
.
2.
Implementing Group Proposal 2: Raw Data, Observations and Results (5 pts).
Complete
Table 8
, which gathers the
supporting raw data for your three (3) replicate
assigned
snack food runs and the
concurrent
oil control run. Then finish
Table 9
.
Table 8.
Assigned
Snack Food (__________) Replicate Lipid Quantitation Raw Data
Assigned
Snack Food
(Unknown) Mass (finely
ground)
Volume of Cyclohexane
Volume of ___________
Beaker 1 Mass (m
beaker
1
)
Unknown Isolate Mass
(m
1
)
Vegetable Oil (Control) Mass
Volume of Cyclohexane
Volume of ___________
Beaker 2 Mass (m
beaker
2
)
Control Isolate Mass (m
2
)
Table 9.
Assigned
Snack Food (__________) Replicate Lipid Quantitation Results and Observations
Assigned
Snack Food
(Unknown)
Unknown Isolate Mass
(m
ULI
)
Observations
Vegetable Oil (Control)
Control Isolate Mass (m
CLI
)
Observations
CHEM 151 LWSA
v5.5
3-25-23
Chemical Thinking
Lipid
Written Signature Assignment
v5.5|
2
3.
Implementing
Group Proposal 2: Starch Test Results (3 pts)
. In the space below, clearly report in complete well-written
sentences the iodine-potassium iodide (I
2
-KI) test observations and results for the isolated lipids (of
Table 8
) and the positive
and negative test controls concurrently run
.
Parts 4 - 8 (the sections below) are strictly an independent (individual) effort. Sorry, no group work!
4.
Assigned
Snack Food Isolation Correction Factor (3 pts)
. Present in a well-organized manner and in complete detail the
isolation correction factor
for your
assigned
snack food based only on
Tables 8
and
9
. Clearly state symbolically the equation
being used, then substitute in actual values, and finally give the results
.
5.
Replicate Runs:
Assigned
Snack Food Percent Fat by Weight (4 pts)
. Show the
percent fat by weight
calculations for your
assigned
snack food replicate (repeat) runs in a highly organized manner and in complete detail based only on the values from
Tables 8
and
9
. Clearly state symbolically, at least once, the equation(s) being used, then present separate calculations for each
replicate run
.
CHEM 151 LWSA
v5.5
3-25-23
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