Water Lab
Name:
Density Activity:
1. Add 100 mL of water to a beaker and label it H2O.
2. Add 100mL of Ethanol to a beaker that you label as ETOH.
3. Add 100mL of salt water to a beaker that is labeled salt water.
4. Add an ice cube to all three and record the temperature every 30 seconds for 5 minutes.
5. Graph this information.
6. What observations do you make regarding the difference in temperatures?
7. Make an observation about each of the ice cubes in all three beakers.
Evaporative Cooling Activity:
1. Use a sponge and wipe water on your arm then blow on the area and record how long it takes until
you no longer feel the cooling of the fan on that spot.
2. Do the same with ethanol and record that information.
High Heat of Vaporization Activity:
1. Add 500mL of water to a beaker and heat for 5 minutes.
2. Record temperature observations every 30 seconds and graph this data and the accompanying data
provided for the heating of Ethanol.
3. What do you notice about the time it takes to raise the temperature of water 10 C?
Time (s)
0
30
60
90
120
150
180
210
240
270
300
Temperature of Water
Temperature of Ethanol
17
24
30
40
51
65
75
80
Surface Tension Activity:
1. How many drops of water can you fit on this penny?
a. Perform this activity four times and calculate the average.
b. Record your data and the shape of the bubble.
2. How many drops of soapy water can fit on a penny?
a. Perform this activity four times and calculate the average.
b. Record your data and the shape of the bubble.
3. Can you float a paper clip on top of water in a dish?
Polarity/Universal Solvent Activity:
1. Fill a test tube half way with water and add one drop food coloring.
2. Fill another test tube half way with water and add one drop of oil.
3. Mix both tubes and record the results.
Name ___________________________
Water Lab Results
Density Activity:
1. Temperature observations:
Water
2. Graph
3. Ice cube observations:
Water
Ethanol
Salt Water
Ethanol
Salt Water
4. Density: Based on the observations, what can be concluded in terms of density in each of the
three beakers?
Evaporative Cooling Activity:
1. Does the water or the ethanol produce a longer cooling sensation?
2. What can be concluded about the evaporative cooling of water?
High Heat of Vaporization Activity:
1. Results:
Time (s)
0
30
60
90
120
150
180
210
240
270
300
2. Graph.
Temperature of
Water
Temperature of
Ethanol
17
24
30
40
51
65
75
80
3. What do you notice about the time it takes to raise the temperature of water 10 C? Why does this
happen?
4. What happens to the ethanol?
Surface Tension Activity:
How many drops of water can you fit on this penny?
1st Trial
2nd Trial
3rd Trial
4th Trial
Average
How many drops of soapy water can fit on a penny?
1st Trial
2nd Trial
3rd Trial
4th Trial
Average
Diagrams of bubbles:
Water
Soapy Water
Polarity/Universal Solvent Activity:
1. Does the food coloring mix with the water?
2. Does the oil mix with the water?
3. Water is the universal solvent, so explain your results. Why does one dissolve or mix and the
other one does not?
**Were you able to float the paper clip on the water? What property of water does this exhibit?
Testing pH:
Solution
pH level