Kim wrote in his journal, a solution is not a mixture, it is just a solution. Is he confused? How would you explain mixtures and solutions to Kim?

A mixture is a mix of two or more substances, with different physical and chemical properties so they can not become homogenous or combine. The substances in a mixture can easily be separated or filtered.

A solution is a special mixture in which one substance completely dissolves in another, and makes a homogenous single form. This can not be separated by filter or easily separated

For better understanding, make a homogeneous solution of sugar and water is a solution as sugar completely dissolves, but if there are any crystals of sugar or dissolve sand in the solution, it will become a heterogeneous mixture.