The student conducted an experiment to observe osmosis in eggs placed in corn syrup and water. They hypothesized that the corn syrup egg would gain weight and stay the same size, while the water egg would maintain weight but shrink in size. After 24 hours, measurements showed the corn syrup egg lost weight and shrank, while the water egg gained weight and increased in size, disproving the initial hypotheses. The results demonstrated that osmosis occurred across the eggs' membranes as water moved between areas of higher and lower concentration.

1. Casey Alvero
8-16

2. Purpose
 Observe osmosis in a cell
 Place eggs in vinegar to
remove the shell
 Measure weight of the egg
using a balance
 Measure size of the egg
using string and measuring
tape

3. Purpose
 Place one egg in corn syrup,
and one in water
 Weigh and measure the eggs
again

4. Hypothesis
Corn Syrup
 I think the egg will weigh more
 The size will stay the same
 It will look dark and sticky

5. Hypothesis
Water
 I think the water egg will weigh
the same
 The size will get smaller
 It will look clear

6. Materials
 Eggs
 Balance
 Measuring Tape
 String
 Corn Syrup
 Water
 2 Beakers
 Vinegar

7. Observations
Vinegar
 There is bubbles after a few
minutes
 More bubbles at top, and eggs
are floating
 Eggs are still floating, and foam
is forming at the top

8. Observations
Corn Syrup
 It no longer has a shell, and it
feels squishy
 After sitting in corn syrup for 24
hours, the egg looks shrivelled
 After sitting in water for 24
hour, the egg is not floating,
and it looks like it got larger

9. Observations
Water
 After sitting in water for 24
hours, the egg is not floating
 It looks like it got larger

10. Before After
CS W 67 g W 44 g
S 16.1 cm S 13.2 cm
H2o W 77.4 g W 91.9 g
S 16 cm S 17.5 cm

11. Conclusion
Water egg
 Got larger because water
moved into the egg
 Egg had a lower concentration
of water than water
 Water moved from high
concentration(water) to lower
concentration(egg)

12. Conclusion
Corn Syrup
 Got smaller because water
moved out of the egg
 Egg had a higher concentration
of water
 Water moved from higher
concentration to (egg) to lower
concentration(corn syrup)

13. Hypothesis
Water Egg
 Size: wrong
 Weight: wrong
 Appearance: wrong
Corn Syrup Egg
 Size: wrong
 Weight: wrong
 Appearance: wrong