Version - 5/23/2016
Rubric for Boiling Point / Freezing Point lab
This lab was performed in groups. For this report, you are allowed to turn in one report for your entire
group. Make sure to use the correct number of significant figures and provide units in your report for
measurements and calculations.
The report should be constructed with correct spelling and grammar in paragraph form and must be
produced on your computer using Word® processing system. This allows you to create a neat report with
tables, subscripts, etc. Use equation editor for all equations/calculations. Double space the report, include
page numbers and print it on white typing paper with no holes or ragged edges.
Introduction – 15 pts
This is a short background on what the lab is about. What is freezing point depression, or boiling point
elevation (be sure to tell me about the one you did, you do not need to tell me about both). Give the
equation you will use, and define all variables.
Procedure – 15 pts
This should be exactly what you did, using your exact measurements. Do not simply copy the procedure
from the lab manual, but type what you did. You only need to provide enough detail so that a reader
could repeat your experiment.
Data – 25 pts
You should make a data table with all of your data including masses, and each temperature reading that
you took. Make sure to include proper units.
Calculations – 25 points
Show me how you used your data to determine what your unknown compound is. You need to use
equation editor in Word for your report.
Analysis of unknown (what is your unknown) – 5 points
Tell me what your unknown compound is. If you don’t think you are correct, make sure you tell me why
you think your data is wrong.
Conclusions – 15 points
Continuation of the analysis of the unknown. Explain what may have gone wrong, why your results may
be different than what you expected, and what you would do to make your experiment better if you could
repeat the experiment. Summarize your important results.