Write two differences between multimolecular colloids and macromolecular colloids.

Explanation

**Step-by-Step Solution:**

1. **Definition of Multimolecular Colloids:**
- Multimolecular colloids are formed by the aggregation of many small molecules or particles that come together to form larger particles that fall within the colloidal size range (1 nm to 1000 nm). These particles are typically smaller than the colloidal size before aggregation.

2. **Definition of Macromolecular Colloids:**
- Macromolecular colloids consist of large molecules (macromolecules) that are already in the colloidal size range. These macromolecules are typically formed from the polymerization of smaller units and have a size that naturally fits within the colloidal range.

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