The student conducted an experiment to observe osmosis in eggs. Eggs were placed in vinegar to remove shells, then one was placed in corn syrup and one in water. It was hypothesized the corn syrup egg would get bigger and heavier, and the water egg would stay the same. Observations found the water egg increased in weight and size due to gaining water, while the corn syrup egg lost water and shrank. The conclusions were the hypotheses were incorrect, as osmosis caused water to move in or out of the eggs depending on concentration.

1. Egg Osmosis
Experiment
Shera Andulan 8-16

2. Purpose
• To observe osmosis in a cell.
1. Place eggs in vinegar to
remove the shell.
2. Measure weight of the egg
using a balance.
3. Measure the size of the egg
using string and measuring
tape.
4. Place one egg in corn
syrup, place the other egg in
water.
5. Weigh and measure the eggs
again

3. Hypothesis
• Corn Syrup Egg
• I think it will get
bigger, heavier and look
larger
• Water Egg
• I think that it the
weight, size and
appearance will stay the
same

4. Materials
• Eggs
• Balance
• Measuring tape & string
• Corn syrup
• Water
• Two beakers
• Vinegar

5. Observations
1. There are bubbles rising
Before After from the egg to the top of
the vinegar
2. There are more bubbles at
Corn Syrup W. 67g W. 44
the top and the egg is
S. 16.1cm S. 13.2cm
floating
3. Eggs are still floating and
foam is forming at the top
H2O W. 77.4g W. 91.9 4. After sitting in corn syrup
S. 16cm S. 17.5cm overnight, it looks
shrivelled up.
5. After sitting in water
overnight, the egg sunk
and became larger.

6. Conclusion
• Water moved into the
water egg making it
larger
• The egg had a lower
concentration of water
than the water
• Water moved out of the
corn syrup egg making it
smaller
• The egg had a higher
concentration

7. Conclusion
• My hypothesis for the water egg
was wrong
• Weight: I thought that the weight
would stay the same but it got
larger
• Size: I thought that the size would
stay the same but it increased
• Appearance: I thought that it
would look the same but it
appeared bigger

8. Conclusion
• My hypothesis for the corn
syrup egg was wrong
• Weight: I thought that the
weight would increase but
it decreased
• Size: I thought that the
size would get larger but it
ended up getting smaller
• Appearance: I thought that
egg would appear larger
but it shrivelled up