1. Select a topic from our lesson and re-explain it to the class as if you
were the instructor. You can use multimedia, but the minimum word
count is 200 words.
Heat of Reaction
a. Define a thermodynamic system and its surroundings.
b. Define heat and heat of reaction.
Distinguish between an exothermic process and an endothermic process 2. Select a food that you commonly consume and share the energy information
from the Nutritional Facts as it is on the label. Detail what the food is composed
of, what the Calories are, what the serving size is and what substances within the
food are responsible for the Calories. Finally, convert those dietary Calories to
true calories and joules. Be sure you select a food WITH CALORIES.
LAYS POTATOE CHIP 3. Specific Heat Lab
Laboratory Details
All labs will have pre-lab comments found within ANGEL. You will learn of any changes in the lab in the
pre-lab comments. These changes take precedence over what is found in the lab.
For you to get an idea of real lab techniques, you will find some video links to laboratory videos.
All lab reports must be in MS-WORD. You must include the "observation sheet" as a table within your
lab report for this first lab.
As in any beginning laboratory in an introduction course, you begin by learning some of the basics.
Here, you will learn about selecting instruments, chemicals, pouring and decanting. FYI: “Decanting”
means pouring off a liquid without disturbing the sediment or lower liquid layers. If you Google the
word, you will find that decanting is important in separating the sediments from an old bottle of wine.
The following website will show you to some interesting laboratory techniques.
http://www.wonderhowto.com/how-to-distill-volatile-product-chemistry-lab-259801/view/
Specific Heat Lab In this experiment we will measure the specific heat of several metals by
warming them to a known temperature and adding them to a known quantity of
water in a calorimeter and measuring the resulting rise in temperature. Heat is transferred between the heated metal and the water, such that the heat
loss by the metal is equal to the heat gained by the water.
Now what do you do?
1. Open ChemLab and select “Specific Heat” when
prompted. 2. Read through the Introduction in BOTH the course and
in ChemLab. Some labs include some modification from
the ChemLab instructions and if so, these modifications
will be listed in our course with each lab. 3. Watch the video intro to this lab https://content.grantham.edu/at/CH205/labs/SpecificHeatLab.mp4
1. Follow the Procedure as outline in ChemLab. 2. Perform the lab, collecting the indicated data as noted in
the observations section (create your own data table
within your lab report collecting the specific data from
this list). 3. Perform the various calculations with your collected data
as listed in the lab’s observations section and compare
your results with the literature values by calculating
your percent error for each of the metals. Also be
sure that, as always, you show each step of the
calculations you complete. 4. Write a lab report of the lab within MS Word. (There is a
“Sample Lab Report” and “Lab Report Instructions” files
in week 1’s course folder).

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