What do soluble powders primarily form when mixed with water?

When soluble powders are mixed with water, they primarily form a solution. This occurs because a solution is defined as a homogeneous mixture in which the solute (in this case, the soluble powder) completely dissolves in the solvent (water). During the dissolution process, the particles of the soluble powder break down into molecules or ions that are uniformly distributed throughout the water, resulting in a clear, stable mixture.

In a solution, the properties of the solute are retained, but they become part of a new phase (the liquid phase with the solvent). This means that the individual components cannot be separated by simple physical means, such as filtration. The resulting solution can be characterized by its uniform appearance and consistency.

Other terms listed would not apply, as a suspension refers to a heterogeneous mixture where the solid particles do not dissolve and can settle over time, while a coarse particle would imply the presence of undissolved solid matter. A volatile mist suggests a vapor or aerosolization rather than the mixing of a solid powder with liquid. Thus, the formation of a solution correctly represents the behavior of soluble powders in water.