Define colloidal solution?

Explanation

**Step-by-Step Solution:**

1. **Definition of Colloidal Solution:**
A colloidal solution, also known as a colloid, is a type of mixture where one substance (the dispersed phase) is evenly distributed throughout another substance (the continuous phase).

2. **Size of Dispersed Particles:**
The size of the dispersed particles in a colloidal solution is between that of a true solution and a suspension. Specifically, the size of these particles ranges from approximately 1 nanometer to 500 nanometers.

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