Explanation:
Egg albumin is a protein found in egg white. When egg albumin is mixed with water and stirred, it forms a colloidal solution. A colloidal solution consists of small particles dispersed in a continuous medium. In the case of egg albumin in water, the egg albumin proteins form the dispersed phase and water serves as the continuous phase.

Colloidal Solutions:
Colloidal solutions are a type of heterogeneous mixture where the particles of the dispersed phase are intermediate in size between those of true solutions and suspensions. The particles in a colloidal solution do not settle down due to gravity and remain dispersed throughout the medium. These solutions appear to be homogeneous, but they scatter light due to the presence of particles.

Why does egg albumin in water not give a stable solution?
Egg albumin in water does not give a stable solution because the protein molecules in egg albumin have a tendency to aggregate and form larger particles. These larger particles eventually settle down due to gravity, resulting in the separation of the dispersed phase from the continuous phase. This process is known as coagulation or flocculation.

Coagulation of Egg Albumin:
Coagulation of egg albumin occurs because the protein molecules are denatured and their structure is disrupted. Denaturation can be caused by factors such as heat, mechanical agitation (stirring), pH changes, and the presence of certain chemicals.

Effect of Stirring:
Stirring the egg albumin in water accelerates the coagulation process. The mechanical agitation disrupts the weak bonds that hold the protein molecules together, leading to the formation of larger aggregates. These aggregates eventually settle down, resulting in the separation of the dispersed phase from the continuous phase.

Conclusion:
In conclusion, egg albumin in water does not give a stable solution because the protein molecules have a tendency to coagulate and form larger particles. Stirring accelerates the coagulation process, leading to the separation of the dispersed phase from the continuous phase.