Purpose:

To discover how the densities of liquids compare to each other.

Hypothesis:

I hypothesize that from least to greatest the densities will be blue, green, yellow, white, and red.

Materials:

1. 5 cups containing the unknown liquids and droppers
2. 6 test tubes
3. 1 test tube rack
4. Some paper towels
5. 1 data sheet for each person

Procedure:

1. Put equal amounts of the different liquids into the test tube to fill in the chart. 5 experiments will have only 2 liquids, and the last 1 will have 5. Write your observations on the Observations column of the chart.
2. When adding liquids to the test tubes, add slowly and don’t put more than 2 cm worth. If the liquids are really thick, you may have to work very slowly.
3. When you are finished, put back the cups of liquid and droppers, and clean all test tubes thoroughly!

Variables and Constant

• Independent Variable: The type of liquid used.

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  Dependant Variable: The density of the liquid

• Constant: The test tubes.

Observations and Results:

Mix and Observations

1. White + Green:

   Red is on the bottom

2. Green + Red:
   Green is on the bottom

3. Red + Yellow:
   Red is on the bottom

4. Yellow + Blue:
   Yellow is on the bottom

5. Blue + White:
   White is on the bottom

6. All Colors:
   Least to greatest density blue, yellow, red, green, and white

Conclusion:

The purpose of this experiment was to discover how the densities of liquids compare to each other. My hypothesis was that from least to greatest the densities will be blue, green, yellow, white, and red. My results were that the densities were from least to greatest blue, yellow, red, green, and white. My results did not match my hypothesis, and I think this happened because I had absolutely, positively no idea what the liquids were (I guess that’s why they’re unknown liquids). I leaned that there are liquids besides oil that less dense than water.