8.9.1 Stability of colloids Why the colloidal system is quite stable? (1)Dynamic stabilization: Brownian motion and diffusion prevent colloidal particles from sedimentation. The less, the more stable. (2) Electric stabilization: All the colloid particles possessing the same charge tends to repulse each other and keep the colloid from coagulation (3)Solvation shell: The interaction between particle and solvent also helps to prevent aggregation of colloidal particles on collision How can we destroy the stability of a colloid?[Group discussion and share What is the role of stabilizing agent in preparation of colloids? Ag-Na, co Chinese ink--gelatinWhy the colloidal system is quite stable? (1) Dynamic stabilization: Brownian motion and diffusion prevent colloidal particles from sedimentation. The less, the more stable. (2) Electric stabilization: All the colloid particles possessing the same charge tends to repulse each other and keep the colloid from coagulation. (3) Solvation shell: The interaction between particle and solvent also helps to prevent aggregation of colloidal particles on collision. 8.9.1 Stability of colloids How can we destroy the stability of a colloid? [Group discussion and share] What is the role of stabilizing agent in preparation of colloids? Ag-Na2CO3 ; Chinese ink—gelatin