Solvent - the most abundant substance in the solution. Solute - the least abundant substance in the solution. Solution concentration is a comparison of the amount of solute dissolved in an amount of solvent. One way is to express concentration is by using percentage of mass. Particles are evenly distributed.
Air is a solution of gases.
Steel is a solution of metals. Add 5g of water to the cup and stir thoroughly. Allow the combined materials to dry overnight. Remove the dry material from the cup. What is this material normally called.