Fill in the blanks by choosing the appropriate word/words from those given in the brackets.(dialysis, peptization , dispersed phase , dispersion medium , electrophoresis , electro-osmosis , coagulation , coagulates, emulsion , gel , gold number , Tyndall effect , protective colloids , electrodialysis)
Brownian movement is due to unequal bombardment of molecules of..........on the colloidal particles.

Explanation

To solve the question, we need to fill in the blank in the statement: "Brownian movement is due to unequal bombardment of molecules of __________ on the colloidal particles."

### Step-by-Step Solution:

1. **Understanding Brownian Movement**: Brownian movement refers to the random motion of colloidal particles suspended in a fluid (liquid or gas). This movement is caused by the collision of the particles with the molecules of the surrounding medium.

2. **Identifying the Key Terms**: The options provided include terms related to colloidal chemistry. The term that specifically relates to the medium in which colloidal particles are dispersed is crucial for this question.

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