A. At what temperature does water freeze? _______ This is the freezing point.
B. At what temperature does ice melt? _______ This is the melting point.
C. At what temperature does water boil? _______ This is the boiling point.
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D. What do you notice about the temperature while the water is in the process of freezing?
E. Does the temperature change while either of these phase changes is occurring?
F. What does the graph of “Temperature vs. Time” look like during a phase change?
G. Why do you think the temperature does not change much during a phase change?
H. What do water molecules look like at 0*C?
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I. What do water molecules look like at 100*C?
J. How is temperature related to the motions of molecules?
K. How do the molecules in the liquid interact with the molecules in the solid when the water temperature is 20*C and the ice
volume is 50cc, and you are adding 0 J/s of heat energy?
L. What about if your water temperature is 100*C? How does this compare to the previous question?
M. What volume of ice is created from 200 cc of water?
N. Why do water pipes sometimes burst in the winter?
O. As altitude increases, the air pressure decreases. How do you think the lower pressure will affect the following? (
--Freezing point:
Increase
Stay the same
Decrease
--Melting point:
Increase
Stay the same
Decrease
-- Boiling point:
Increase
Stay the same
Decrease
P. What are the freezing, melting, and boiling points of water at 5,000 meters (16,404 feet)?
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Q. How did altitude affect the freezing, melting, and boiling points of water?