The purpose of this experiment was to understand osmosis and see this through the cell membrane of the egg. This shows the passive transport, movement of substance, across the membrane. Diffusion is the movement of molecules from an area of higher to lower concentration. Osmosis is the movement of water across semi-permeable membrane. It moves water molecules across cells via diffusion. Its direction depends on the concentration.

Raw eggs were placed in beakers in vinegar solution.

Immediately bubbles (carbon dioxide) formed on the surface of the egg. Vinegar causes egg shell (calcium carbonate) to disappear, layer by layer.

Two days later, one shell-less egg soaking in the vinegar was placed in syrup solution.

The third day, noted that the egg in the syrup had shrivelled up, water moved out of the egg. (hypertonic). Placed this egg into to water solution.

The fourth day, noted the water moved into the shrivelled egg, it enlarged to its original size. But then it stayed at equilibrium and was same size as eggs in the fridge. It's isotonic as there is no movement of water into or out of the egg.

The egg in the vinegar solution enlarged, water moved into the egg. (hypotonic).