1. Osmosis Lab
Chicken Egg Cell Model

2. Questions: 1. Write a hypothesis based on the syrup treatment.
If a “cell” is placed in a concentrated fructose solution it will experience a _________________ environment. This will cause the cell to _____________ mass (water) because the concentration of sugar is _____________ outside of the “cell” compared to inside the “cell.”
hypertonic
lose
greater

3. Questions: 2. Write a hypothesis based on the water treatment.
If a “cell” is placed in water it will experience a _________________ environment. This will cause the cell to _____________ mass (water) because the concentration of solutes is _____________ outside of the “cell” compared to inside the “cell.”
hypotonic
gain
less

4. Questions: 3. Explain why vinegar was used first.
Vinegar is an acid that dissolves the shell of the egg. Without the shell, water is very easily able to enter and leave the cell.

5. Questions: 4. Did your “cell” gain back all of the mass it lost?
Yes, it actually may have gained more mass back depending on how long the egg sat in the distilled water.

6. Questions:
5. Draw a sketch of the lab procedure you did in the space below. Include all the different treatments.

7. Egg Soaked In Vinegar

8. Egg Soaked In Syrup (HypERtonic Environment)

9. Egg Soaked In Distilled Water (HypOtonic Environment)