Solutions are by definition homogeneous solutions. This means that they are a mixture of two or more chemicals but they contain only a single visible phase (in other words, all parts of the solution look the same). A solution is a homogeneous mixture of a solid solute dissolved in a liquid solvent. That is really the only property common to all solutions. The solute can be any solid and the solvent can be any liquid. The solution can be any color or temperature. But it must look completely uniform throughout. The solid must be completely dissolved.