what are mechanical properties of colloids
Answers
Answer:
Colloidal particles present in a colloidal solution exhibit a very important property called Brownian movement. When a colloidal solution is viewed under an ultra microscope, the colloidal particles are seen continuously moving in a zigzag path. The property was discovered by a botanist Robert Brown in 1827, when he observed that pollen grains suspended in water exhibit random zigzag motion. After the name of the discoverer, the property was named as Brownian movement. It may be defined as follows.
The continuous zigzag movement of the colloidal particles in the dispersion medium in a colloidal solution is called Brownian movement.
Answer:
General properties of colloidal systems are as follows:
(1) Colloidal system is heterogeneous and consists of two phases, dispersed phase and dispersion medium.
(2) The dispersed phase particles pass slowly through parchment paper or animal membrane, but readily pass through ordinary filter paper.
(3) The colloidal systems exhibit optical property like Tyndal effect, kinetic property like Brownian motion, electrical properties like electrophoresis a colour.