Generally electrolytes' ions bind to the surface and damage the double electrostatic layer of colloidal particles. This greatly reduces stability of a colloidal system, since electrostatic repulsion is the main force keeping those colloidal particles apart.
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Removing electrolytes in a colloidal system is important because electrolytes can destabilize the system by reducing the repulsive forces between colloidal particles, causing them to aggregate or flocculate. This can lead to changes in the properties of the colloidal system, such as its stability, viscosity, and optical properties. By removing electrolytes, the colloidal system can be stabilized and maintain its desired characteristics.
Breaking colloids involves destabilizing the system through methods such as heating, adding electrolytes, or changing the pH. This causes the colloidal particles to aggregate and separate from the dispersion medium. The resulting precipitation or coagulation allows for the separation and purification of the components.
Sol is a colloidal dispersion where solid particles are suspended in a liquid medium. Gel is a colloidal system where a liquid is dispersed in a solid network forming a semi-solid material. Emulsion is a colloidal dispersion of two immiscible liquids where one liquid is dispersed in the other in the form of droplets.
The urinary system filters waste produced by cells. Kidneys filter blood to remove waste products like urea and excess electrolytes, which are then eliminated as urine through the bladder.
There is more than one system that removes wastes from the body. The urinary system is probably the most familiar (urine), the digestive tract (feces), the respiratory tract (carbon dioxide) and the integumentary (skin) removes water and some electrolytes.
The cytoplasm is considered a colloidal system because it is a complex mixture of various macromolecules (such as proteins, nucleic acids, lipids) dispersed in a solvent (mostly water). These macromolecules do not settle out of the solvent due to their large size and charge interactions, resulting in a stable colloidal suspension within the cell.