This investigation discusses Eggs' Mass in Different Solutions.

Essay by coleborgiaHigh School, 10th gradeA+, January 2004

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Eggs' Mass in Different Solutions


Egg 1 in 150 mL of distilled water will undergo cytolosis.

Egg 2 in the 0.9% saline solution will undergo plasmolysis.

Egg 3 in 150 mL of corn syrup will undergo cytolosis.

Egg 4 in 150 mL of fountain water will undergo plasmolysis.


8 200 mL beakers

2 trays

600 mL vinegar (acetic acid)

9 g salt (sodium chloride)

1, 150 mL distilled water

150 mL corn syrup

piece wax paper

4 unfertilized eggs

triple balance beam

absorbent paper

150 mL fountain water (city water)


Gather all materials. Place each of the four eggs in a separate beaker filled with 150 milliliters of vinegar (acetic acid). Allow to set for two to three days until the shell is dissolved. Carefully dry each egg with a sheet of absorbent paper. Measure the initial mass of each egg. Place Egg 1 in the beaker labeled Beaker 1, which is filled with 150 milliliters of distilled water.

Place Egg 2 in Beaker 2 filled with 0.9% saline solution, Egg 3 in Beaker 3 with 150 milliliters of corn syrup, and Egg 4 in Beaker 4 with 150 milliliters of fountain water. Allow to set one to two days and then determine the final mass and the difference between the initial and final masses of each egg. Record all data.


Egg Initial Mass(grams) Final Mass (grams) Differences in Mass(grams)

Egg 188.994.045.14

Egg 290.793.42.7

Egg 380.647.543.1

Egg 471.2578.67.35

Discussion/ Conclusions

Egg 1 was found to have gained mass after being placed in 150 milliliters of distilled water. This is a hypotonic solution. This process is referred to as cytolosis. This takes place when water diffuses into the contractile vacuole through osmosis. Eventually the contractile vacuole bursts. In the results of Egg 2, it was found...