* Solutions are homogeneous mixtures where one substance (the solute) is dissolved evenly into another substance (the solvent).

* Colloids are heterogeneous mixtures where particles are dispersed throughout a medium but are larger than those in a solution.

In mineral water:

* Solute: Minerals like calcium, magnesium, sodium, etc. are dissolved in the water.

* Solvent: Water is the solvent.

The minerals are dissolved at a molecular level, making the mixture homogeneous and transparent. The particles are too small to be seen with the naked eye, and they don't settle out over time. This aligns with the definition of a solution.