Lab Experiment

Title of Experiment:

In this experiment, I demonstrated osmosis using shell less eggs. Osmosis is the diffusion of a solvent across a selectively permeable membrane. In this experiment, I was able to demonstrate how water moved from an area of high water concentration but lower solute concentration (hypotonic solution) to an area of low water concentration but high solute concentration (hypertonic solution). In an isotonic solution, water will move into the cell until the cell has reached a state of equilibrium or until enough water has been diffused to stop the flow inside. Tonicity is the measure of the solution’s ability to change the cell’s volume by manipulating the cell’s water content. The hypotonic solution in this experiment is the karo syrup whereas, the hypertonic solution is the water.

Introduction/Purpose:

In the hypertonic solution, I think that the water will diffuse at an equal rate in and out of the egg. In the hypotonic solution, however, the water will move from inside the egg out into the solution to try and create a state of equilibrium.

Materials:

For this experiment I used:

* 6 raw eggs

* Distilled white vinegar

* Light corn syrup

* Tap water

* Blue food coloring

* String to measure the circumference of the egg

* Glass jars

* Masking tape

* Data sheet for lab results

Methods:

The first step of this experiment is to measure the circumference of the raw eggs and write the information in a table format on your data result sheet. Then place the eggs in a large container and cover them with distilled white vinegar. Place a lid on the container and let the eggs sit in the vinegar for 48 hours. After the 48 hour mark, take the eggs out of the vinegar and gently rinse under tap water. If any shell remains on the egg, gently wipe it off as to not break the membrane surrounding the egg as the egg is still raw. Carefully, measure the circumference of the eggs and record the data. Once you have removed...