Give one example of positively charged sol and one example of negatively charged sol.

Explanation

To answer the question regarding examples of positively charged and negatively charged sols, we can follow these steps:

### Step 1: Understand the Concept of Colloidal Solutions
Colloidal solutions, or sols, consist of a dispersed phase (particles) and a continuous phase (medium). The charge on the dispersed particles determines whether the sol is positively or negatively charged.

### Step 2: Identify Examples of Positively Charged Sols
Positively charged sols are those where the dispersed particles carry a positive charge. Common examples include:
- **Aluminum Hydroxide (Al(OH)₃)**: This is a metal hydroxide that forms a positively charged sol.
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