[CHM 111] Lab question

[Andrew J. Pounds]

On 08/29/2017 10:39 AM,  wrote:
>
> Good morning!
>
>
> I am working on writing everything into my lab notebook, and I'm not 
> completely sure what things we need. I know in class you mentioned 
> that its all on the report form, but the report form has directions 
> that it must be printed and turned in. The procedure on the other hand 
> has all the directions on how to actually do the lab. Are we supposed 
> to have both of these things, or just one?
>
>
> Thanks,
>
>

Great question --  first look over the lab procedures and the report 
forms.    Pay particular attention to items that you need to record in 
lab -- like masses and volumes.   On the report forms you will also 
notice several items that you will need to calculate and in some cases 
graph.  You will do most of the calculating and graphing outside of lab 
on the REPORT, not in the lab notebook.


I recommend that for this first lab you record as much as you think you 
are going to need to complete the lab correctly.  I would recommend that 
you go ahead and make charts that you can fill in with the data that you 
need to record.  For example, for the first part of the lab dealing with 
the density of water, you should record exactly 12 different 
measurements (4 volumes and 8 massings).  Create that chart and give 
yourself instructions on what should go in the different slots.


Go ahead and make two more identical charts to record data from two 
other groups.   Be sure to include the names of the people in those 
groups next to their data once you collect the data in lab.


For the density of an unknown metal lab you should have exactly four 
massings and a place to write the unknown number.  Label all of these 
things in your lab notebook and record the data in the appropriate location.


You should also record the temperature of the lab.


Hope that helps.



-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj

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