Give two examples of multimolecular colloids .

Answer

To answer the question about examples of multimolecular colloids, we can follow these steps:

### Step-by-Step Solution:

1. **Define Multimolecular Colloids**:
- Multimolecular colloids are formed when a large number of atoms or smaller molecules (with a diameter less than 1 nanometer) aggregate together upon dissolution to form species that fall within the colloidal size range (1 nm to 1000 nm).

2. **Identify Characteristics**:
- These colloids consist of clusters of molecules or atoms that are too small to be seen individually but are large enough to scatter light, which is a characteristic of colloidal systems.

3. **Provide Examples**:
- **Example 1: Sulfur Sol**:
- Sulfur sol is a colloidal solution where the particles consist of thousands of S8 sulfur molecules aggregated together. This results in a colloidal system where the size of the particles falls within the colloidal range.
- **Example 2: Gold Sol**:
- Gold sol is another example where the colloidal particles consist of various sizes of gold atoms. These particles aggregate to form a colloidal solution, demonstrating the properties of multimolecular colloids.

4. **Summarize the Examples**:
- Therefore, the two examples of multimolecular colloids are:
- Sulfur sol
- Gold sol

### Final Answer:
Two examples of multimolecular colloids are:
1. Sulfur sol
2. Gold sol

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