Results: ( Collection of data)

1. We had intended to measure the mass of each egg before submerging in respective solutions

2. We had an interval of 1 day for the de-shelling of eggs and also for the eggs to be submerged into the different solutions. We also took the measurements a few times in case of random error and got the same measurement everytime. Thus, our results are:

Egg in oil:

[original]de-shelled: 85.5g

after putting it in oil : 77.6g

Egg in sucrose:

[original]de-shelled: 79.9g

after putting it in sucrose: 84.8g

Discussion:

We rejected our hypothesis made on sucrose. We had predicted it to lose mass but it gained mass instead. However, the hypothesis on the egg which was immersed in oil was accepted.

Explanation:

Oil:
As water molecules move from a region of higher water potential(egg cytoplasm) to a region of lower water potential ( oil ), down a water potential gradient through a partially permeable membrane by osmois, water is lost from the cytoplasm in the egg. Thus, its mass decreased.

Sucrose:

The egg cytoplasm has lower water potential than the dilute sucrose solution. As water molecules move from a region of higher concentration ( sucrose solution) to a region of lower concentration ( egg cytoplasm ), down a water potential gradient, through a partially permeable membrane by osmosis, water molecules moved into the cytoplasm causing its mass to increase.