The student conducted an experiment to observe osmosis in eggs. Eggs were placed in vinegar to remove their shells, then weighed and measured. One egg was placed in water and one in corn syrup. It was hypothesized that the corn syrup egg would stay the same size and weight but look brown and mushy, while the water egg would get smaller in size and weight but look the same. Observations found the corn syrup egg got smaller and lighter while the water egg got bigger and heavier, contradicting the hypotheses. The experiment demonstrated how osmosis causes water to move into or out of cells.

1. S H E I L A L A M 8 - 1 4
EGG OSMOSIS
EXPERIMENT

2. PURPOSE
To observe osmosis in a
cell.
• 1) Place eggs in
vinegar to help
remove the shell.
• Measure the weight of
the egg.
• Measure the size of
the egg.

3. PURPOSE
• After place egg into
water.
• Than take the other
egg and place that in
corn syrup.
• Than wait, and
measure and weigh
again.

4. HYPOTHESIS
• Corn syrup egg:
 Size : Is going to stay
the same
 Weight: Going to stay
the same
 Looks: Going to look
gross ( brown&
mushy)

5. HYPOTHESIS
 Water egg:
 Size: Get smaller
Weight: Changes 10
down
 Looks: The same

6. MATERIALS
- Vinegar
- Corn syrup
- 2 eggs
- Balance
- Measuring tape and
string
- Water
- 2 beakers

7. OBSERVATIONS
Corn
Syrup
Egg
Before:
W- 64.9g
S- 16.0 cm
After:
W- 35.3g
S- 13.0cm
Water
Egg
Before:
W- 64.8g
S- 16.5cm
After:
W- 83.3g
S- 18cm
• 1) Bubbles coming off the
top of the egg.
2) Eggs are floating.
3) After 48 hours there is a
lot of foam.
4) The skim is gone :
-it is soft
-jelly like
-squishy.
5) After the corn syrup egg
sat for 48 hours ( 2 days):
-soft
-soggy
-brownish
6) Water egg looks short a
transparent and bigger.

8. CONCLUSION
Corn Syrup Egg:
 Egg got smaller.
 The egg got had higher
concentration than corn
syrup.
 Water moved ( from higher
concentration to low
concentration)
 Water left egg
Water Egg:
 Got bigger.
 Water entered egg.
 Water had higher
concentration than egg.

9. CONCLUSION HYPOTHESIS
• Corn syrup egg:
• Weight: Wrong, because I
thought that I egg was going to
stay the same in weight but
after it got smaller.
• Size: Wrong also, because I
thought that the egg was
going to stay the same in size.
• Looks: Right, because I said
that it was going to look gross,
brown, and mushy.

10. CONCLUSION HYPOTHESIS
• Water egg:
• Weight: Wrong, because I
said that it was going to get
smaller but than it got bigger.
• Size: Wrong, because I said
that it was going to get smaller
but than it got bigger.
• Looks: Right, because it
looked the same.