What are micelles ? Give an example of a micellers system.

Explanation

### Step-by-Step Text Solution:

**Step 1: Definition of Micelles**
Micelles are aggregates of surfactant molecules that form in a solution when the concentration of the surfactant exceeds a certain threshold known as the critical micelle concentration (CMC). At low concentrations, surfactants behave like normal electrolytes, but as the concentration increases, they aggregate to form micelles, which exhibit colloidal properties.

**Step 2: Structure of Micelles**
Micelles consist of two distinct parts:
- **Hydrophilic Head**: This part is water-attracting (hydrophilic) and is usually charged, allowing it to interact favorably with water.
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