Here's why:

* Solute: The substance being dissolved (e.g., sugar in water)

* Solvent: The substance doing the dissolving (e.g., water)

* Concentration: The amount of solute dissolved in a given amount of solvent.

Dilution works by increasing the volume of the solution without changing the amount of solute. This spreads the solute out more, making the solution less concentrated.

Let me know if you'd like a specific example!