Question

what is a solution? any mixture of substances a mixture with only one type of substance evenly distributed in a space a mixture in which the molecules of one substance are evenly distributed within another substance a mixture in which the molecules of one substance are distributed within another substance uneyenly

Explanation:

A solution is a homogeneous mixture. This means that the molecules of one substance (the solute) are evenly distributed within another substance (the solvent).

• Option 1: "Any mixture of substances" is incorrect because not all mixtures are solutions. For example, a mixture of sand and water is not a solution as it is heterogeneous.
• Option 2: "A mixture with only one type of substance evenly distributed in a space" is incorrect because a solution has at least two substances (solute and solvent).
• Option 4: "A mixture in which the molecules of one substance are distributed within another substance unevenly" is incorrect as solutions are homogeneous (evenly distributed).

Answer:

A mixture in which the molecules of one substance are evenly distributed within another substance.