Exp 7 - notebook procedure, graph, report, etc.

[robert zellmer]

I always get questions about exp 7 and what should be in the notebook
and whether there is a report.  You will be doing a computer simulation
for part of the lab and taking data for part of it.  Bring your laptops if
you have one.  I don't think this will work on the iPads.  The TA will
divide you into groups.

All information collected for both the Part 1 (simulation) and Part 2
(experimental) goes in the notebook.  While you will be working in
groups each of you should be writing all the information in your own
notebook in your own words.

The notebook and report consists of several parts.

*NOTEBOOK*:

The purpose should be in the notebook (try to condense the objectives
into 2-3 sentences).

*Part 1 (simulation part)*:

You don't need to put the whole procedure for the simulation in your
notebook.  Just put in the titles for each subsection (Part 1, Quantized
Energy and Photons, Line Spectra, etc.) and the tables for each of those
subsections from *pages 51-62 *(i.e. the tables corresponding to these
subsections). You will record your "data" and observations from the
simulation in these tables. Answer ALL questions posed in the manual
(write answers in the *notebook*) and fill in all the tables shown in the
manual in your *notebook *(even though some of them state to answer
them in the report, the notebook pages are being considered part of
the report so you don't have to repeat them - see below).

*Part 2 (starting on page 62 - experimental part)*:

Write out the procedure as usual.  The tables on page 63 should be
included in the notebook.  In lab you will record the color, relative
intensity and scale readings for both H and He.  For the H spectrum
you get the wavelengths from the simulation for the experimental
spectrum and the Bohr model (table on page 58 which should be in
the notebook).  The yellow line in table 7.1 is from the bulb used to
light up the scale.  Record that as well.  Each of you have to look at
the H and He spectra and record the information.  Make sure the
same spectroscope is used for H and He.


*REPORT*:

This is done individually. *NO GROUP work*!!!

There is no "formal" report.  You will turn in the notebook pages before
leaving lab as usual.  This will count as part of the grade.

For this report there is a *report template *on *Carmen *which has the 
tables
on page 63 and pages 65-68.  You *MUST *use this template for the report.
*NO *scans or pictures of these pages will be accepted.

Insert a cover page (as usual) and fill in the tables in the template 
(pages 63
and 65-68).  You can use Excel to make the tables on page 63 and replace
those tables in the report template or you can simply type your numbers
directly into the tables.  I would suggest using Excel for at least 
Table 7.2
so you can have it do the calculations using the equation you get from the
calibration curve (explained on page 64).

Include the graph for the H spectrum.  You don't need a purpose, procedure,
discussion section (unless you need to discuss some sort of errors for 
the data
you collected in part 2 and your graph) or conclusion section. There is one
sample calculation using the eqn. generated from your calibration graph to
calculate a single wavelength for the He spectrum.

For the *graph (calibration curve*):

You need to make a calibration curve to relate your scale readings to
wavelength.  You use the H spectrum to do this.

Look on page 64 (top of page) for an explanation.  You graph wavelength
versus scale reading.  It should be a smooth curve (not a linear fit).  
If using
Excel it will give you an eqn. relating wavelength to scale reading 
(based on
your H spectrum) which you can use to calc. the wavelengths for He by
substituting the scale readings for He.  An easy way to do this would be to
make Table 7.2 on page 63 in Excel (at least the scale readings) and program
your eqn from the calibration curve into the table.   You have to show one
sample calc. on how you get a wavelength from scale reading for He.
Make sure your graph follows the rules for making a good graph.

*Summary of Report:*

Report template with added cover page  (*MUST *use the template on Carmen)
Calibration curve
Sample calculation

*Pre-lab and Post-lab*:

There is an on-line pre-lab quiz.
There is no post-lab quiz or data-entry.

Please go to the following link for questions about exp 7, the notebook,
procedure, the link to the simulation, etc.

*Laboratory* 
<http://chemistry.osu.edu/%7Erzellmer/chem1250/lab/lab_1250.htm>

Dr. Zellmer
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osu.edu/pipermail/cbc-chem1250/attachments/20200209/ab50ba83/attachment-0001.html>