Here's why:
* Solvent: A solvent is a substance that dissolves another substance (the solute) to form a solution.
* Solute: A solute is the substance that dissolves in a solvent.
Water is an excellent solvent because of its polar nature, allowing it to interact with a wide range of substances, including ionic compounds and polar molecules. However, it doesn't dissolve everything (like oils and fats).
Therefore, water is known as the universal solvent due to its ability to dissolve many substances, not because it's the substance being dissolved.