Name
Class
Date
Properties of Water Stations Lab
As a group, you will complete the laboratory experiment at each of the lab stations and record your
observations and results for each station. Write your responses in complete
sentences whenever possible. Follow the directions for each lab that
are posted at each of the lab stations. Be sure to pay special
attention to the purpose of each lab before beginning the lab.
Station 1: Density
1.
Write your observations of the ice cube in the water.
2.
Summarize your thoughts about the impact on the world if ice were denser than water.
3.
Water molecule drawing:
Questions
4.
Why does ice float rather than sink?
5.
How would life in a lake be affected if ice sank and lakes froze from the bottom up?
3/22/16 8:00 AM
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Oelfke (elf-ka)
Station 2: Surface Tension
Counting Drops on a Penny
6.
Fill in the table below with the number of drops you added to the penny of each substance
before the liquid spilled over.
Substance
Water
Oil
Soapy Water
Number of Drops
Comparing the Shape of a Drop
7.
After placing a few drops of each of the liquids on the wax paper, draw what the drops look like
from the side view. Be sure to capture the relative height/flatness of the drop.
Water
Oil
Soapy Water
Upside Down Water Trick
8.
Write your observations of what occurred when the Erlenmeyer flask was turned upside down.
Questions
9.
What does a high surface tension do to the number of liquid molecules that can stay together?
10.
Based on your evidence, compare the surface tension of water, oil, and soapy water.
11.
Give a reason for the varying shapes of the water, oil, and soapy water.
12.
Explain the reason for your observations of the upside down water in the Erlenmeyer flask.
3/22/16 8:00 AM
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Oelfke (elf-ka)
Name
Class
Date
Properties of Water Stations Lab
As a group, you will complete the laboratory experiment at each of the lab stations and record your
observations and results for each station. Write your responses in complete
sentences whenever possible. Follow the directions for each lab that
are posted at each of the lab stations. Be sure to pay special
attention to the purpose of each lab before beginning the lab.
Station 3: Evaporation Rate and Specific Heat
Evaporation Rate
13.
Record the time for the water and isopropyl alcohol to evaporate.
Substance
Evaporation Time (seconds)
Water
Isopropyl alcohol
14.
Does water or isopropyl alcohol have a higher specific heat? How do you know?
15.
Which becomes hot first, the water or the pot? Explain why.
Questions
16.
Which substance, water or isopropyl alcohol, had the higher heat of vaporization?
17.
Based on your results explain why water is a much more effective coolant than alcohol for the
body.
18.
Explain why this property of water is important to living organisms?
19.
When going to the pool or beach, why does the water temperature feel cooler than the air
temperature?
3/22/16 8:00 AM
3 of 9
Oelfke (elf-ka)
3/22/16 8:00 AM
4 of 9
Oelfke (elf-ka)
Station 4: Adhesion/Cohesion
20.
Fill in the diameters of the filter papers on the data table below.
21.
Record the height of the liquid on the filter paper of different widths as you take your
measurements.
Height of Dye on Filter Paper Over Time
Filter Paper
Width (mm)
1 minutes
2 minutes
3 minutes
4 minutes
5 minutes
Questions
22.
Define adhesion in your own words.
23.
Define cohesion in your own words.
24.
Based on your evidence, what statement can you make about water’s speed of climbing filter
paper of varying widths?
25.
What does this mean about how fast water is able to “climb” tubes within plants?
3/22/16 8:00 AM
5 of 9
Oelfke (elf-ka)
Name
Class
Date
Properties of Water Stations Lab
As a group, you will complete the laboratory experiment at each of the lab stations and record your
observations and results for each station. Write your responses in complete
sentences whenever possible. Follow the directions for each lab that
are posted at each of the lab stations. Be sure to pay special
attention to the purpose of each lab before beginning the lab.
Station 5: Ability to Dissolve
26.
Record your observations about how quickly and thoroughly
each of the solutes dissolves in water and oil in the table below.
Solutes
Solvent
Salt
Sugar
Iodine crystals
Water
Oil
Questions
27.
Summarize what you found in your experiment, based on your recorded observations.
28.
Why do you think that some substances dissolve easier in one type of liquid than in another?
3/22/16 8:00 AM
6 of 9
Oelfke (elf-ka)
Station 6: Liquid at Room Temperature
Liquid at Room Temperature Data Activity
Questions
29.
What trends do you notice in the data table? Explain.
30.
What is unusual about the most common pattern? Explain.
31.
How does water compare to other substances?
3/22/16 8:00 AM
7 of 9
Oelfke (elf-ka)
Name
Class
Date
Properties of Water Stations Lab
As a group, you will complete the laboratory experiment at each of the lab stations and record your
observations and results for each station. Write your responses in complete
sentences whenever possible. Follow the directions for each lab that
are posted at each of the lab stations. Be sure to pay special
attention to the purpose of each lab before beginning the lab.
Analysis
32.
List three things that you discovered about water.
33.
List two ways that the characteristics of water help the body.
34.
List two ways that characteristics of water help plants.
35.
Which property of water is represented by each question? Explain your answer.
A.
How does water rise from the roots of a tree to the very top?
B.
How do insects walk on the water?
C.
Why does pool water feel so nice and cool on a hot summer day?
D.
Why does ice float rather than sink?
E.
Why is sweating a good way for our bodies to cool down?
F.
What happens to sugar when mixed in with hot or cold tea?
3/22/16 8:00 AM
8 of 9
Oelfke (elf-ka)
3/22/16 8:00 AM
9 of 9
Oelfke (elf-ka)