This document describes an experiment to observe osmosis in eggs. Students placed eggs in vinegar to remove the shell, then weighed and measured them. One egg was placed in water and one in corn syrup. After 48 hours, the egg in corn syrup decreased in weight and size due to losing water through osmosis, while the egg in water gained weight and size by absorbing water. The experiment supported the hypotheses that the corn syrup egg would lose water and shrink, while the water egg would gain water and enlarge.

1. Cindy Su 8-14
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2. *
To observe
osmosis in a cell
1) Place eggs in vinegar to
remove shell
2) Measure weight of egg
3) Measure size of egg
4) Place egg in water
5) Place other egg in corn
syrup
6) Weigh and Measure egg
again

3. *
Corn Syrup Egg
*Weight will decrease
*Size will decrease
*Look the same

4. *
Water Egg
*Weight will increase
*Size will increase
*Look the same

5. *
*Vinegar
*Water
*Corn Syrup
*2 Eggs
*2 Beakers
*Balance
*Measuring
tape/String

6. *
Before After
Corn Syrup Weight: 64.9g
Size: 16.0 cm
Weight: 35.5g
Size: 13.0 cm
Water Weight: 65.8g
Size: 16.5 cm
Weight: 83.3g
Size: 18.0 cm

7. *
Eggs after vinegar
*Foam on top of vinegar
*Bubbles come off egg
*Soft, squishy, jelly like

8. *
Egg after Corn
Syrup in 48hr
*Soft
*Soggy
*Brownish
*Not circular

9. *
*Egg after water
in 48hr
*Transparent
*Larger

10. *

11. *
Corn Syrup Egg
*Size decrease
*Water left egg
*egg; higher water
concentration
*Corn syrup; lower
water concentration
*Water move to high
concentration

12. *
Water Egg
*Size increase
*Water entered egg
*Egg; lower water
concentration
*Water; higher water
concentration
*Water moved to
higher concentration

13. *
Corn Syrup Egg
*Size- right, predicted
to be smaller
*Weight- right,
predicted to decrease
*Look- wrong,
predicted to be the
same
Water Egg
*Size- right, predicted
to be larger
*Weight-right,
predicted to increase
*Look- wrong,
predicted to be the
same
Hypothesis