CHEM 1030L — Temperature Measurements
Name:
______________
Date:
Laboratory Report
______________
Section:
______________
Lab Report Instructions: Enter text or data in the YELLOW fields. Copy results from the Calculations sheets into the BLUE
fields. The highlights are provided to clarify where data, text, and calculation results should be entered by the student. The
completed lab report should be printed for the instructor in black & white or gray scale.
PURPOSE
Instructions: Using 2-4 complete sentences written in third person with proper grammar and punctuation, briefly summarize the purpose of
this laboratory exercise. Include the learning objectives and the major outcomes.
Write the purpose of this Lab Exercise here…
DATA AND OBSERVATIONS
Hint: ALWAYS include units of measurement and the correct number of sig. figs.
Part A: Bunsen Burner Observations
Color of the flame when the air vent is closed?
Does this color indicate complete or incomplete
combustion?
Color of the flame when the air vent is open?
Does this color indicate complete or incomplete
combustion?
Data for Heating Curve of Water
Mass of dry beaker
Mass of beaker + ice water
Mass of water
<–– Perform calculation in Calculations section and place resulting answer(s)
here.
Temperature at which the
last piece of ice melted
Temperature at the boiling
point
Change in temperature
<–– Perform calculation in Calculations section and place resulting answer(s)
here.
Calories absorbed by water
during temperature change
<–– Perform calculation in Calculations section and place resulting answer(s)
here.
Kilojoules absorbed by
water during temperature
change
<–– Perform calculation in Calculations section and place resulting answer(s)
here.
CHEM 1030L — Temperature Measurements
Laboratory Report
Part B: Temperature Measurements Using a Glass Thermometer
Measured
Temp. in
°C
Calculated
Temp. in
°F
Calculated
Temp. in
K
Hint: Report temperatures to the
nearest 0.1 °C.
Room Temperature
<–– Convert °C to °F and K in the Calculations
section and place answers here.
Tap water
<–– Convert °C to °F and K in the Calculations
section and place answers here.
Ice/Water Mixture
<–– Convert °C to °F and K in the Calculations
section and place answers here.
Ice/Water/Salt Mixture
<–– Convert °C to °F and K in the Calculations
section and place answers here.
Heating Curve of Water (part of the data section)
1. Print the heating curve
2. For each of the following regions on the heating curve, write the physical change that occurred in that
region.
a. Lower plateau
b. Region of temperature increase
c. Upper plateau
3. Attach the labeled heating curve here, as part of the Data and Observations section
Attach the Calculations section here, after the heating curve.
CHEM 1030L — Temperature Measurements
Laboratory Report
QUESTIONS AND ANALYSIS
INSTRUCTIONS: Using one or more complete sentences written in third person with proper grammar and punctuation, briefly respond to the
following questions.
Hint: Remember that points are awarded for each aspect of the question.
1.
At the beginning of the heating curve, the beaker contained ice and water. When heat energy was added by the
Bunsen burner, the temperature of the ice/water mixture did not increase, but another change did take place.
What happened to the energy that was added to the ice/water mixture by the Bunsen burner flame?
Explain how that energy was used.
Type the response here...
2.
When water is heated, the temperature eventually reaches a constant value and forms a plateau at the upper end
of the heating curve. Explain what this plateau indicates about the compound H 2O.
Type the response here...
3.
Once enough heat energy was been added to the beaker to heat the water to the boiling point (and the heating
curve was in the upper plateau region), you continued to add heat to the water but the temperature did not
increase. What happened to the additional energy that was added to the boiling water. by the Bunsen
burner flame? Explain how that additional energy was used.
Type the response here...
4.
Water has one of the largest specific heats of any substance. Explain how the high specific heat of water is
important to the regulation of human body temperature.
Type the response here...
5.
Write a chemical equation that shows the physical change that takes place when water boils.
Type the response here...
6.
When water boils, what is the gaseous substance that is present in the bubbles that are formed in the boiling
water?
Type the response here...
CONCLUSION
INSTRUCTIONS: Write an essay, using complete sentences written in third person with proper grammar and punctuation, to briefly
summarize (1) the purpose of this laboratory exercise, (2) the work performed, (3) any problems encountered and how they could affect the
results, and the deliverables (which changes were chemical, which were physical, etc.).
Use paragraphs to separate major ideas, however, do not number the paragraphs.
Type the response here...