ABSTRACT

Exosmosis and endosmosis verification using white raw eggs have been carried out. Two beakers of dilute hydrochloric (HCl) acid solution were prepared. Two white eggs were placed differently into beakers labelled Beaker A and B respectively containing dilute hydrochloric (HCl) solution and left for five hours. Beaker A (containing Saltwater) was seen as more concentrated than the albumin in the egg. Water molecules moved from a low concentration point (albumin) to the high concentration point (saltwater). The movement of water molecules from the low concentration caused a shrinkage of the white egg. Beaker B (containing freshwater) showed less concentration than the albumin in the egg. Water molecules from the freshwater moved into the albumin causing a swelling (increase in size) of the egg present in beaker B. Beaker A showed a phenomenon known as Exosmosis, which is osmosis of fluid flow through a membrane towards a region of lower concentration. Beaker B showed a phenomenon known as Endosmosis, which is osmosis of fluid flow through a membrane towards a region of higher concentration.