What is a solution?

What is a solution?

• A. A mixture that can be separated easily.
• B. A liquid mixture of one or more substances that cannot be separated simply.
• C. A mixture of finely ground particles that do not dissolve.
• D. A medication applied to the skin.

Answer: (B)

A solution is a homogeneous liquid mixture where one substance (the solute) is dissolved in another (the solvent), resulting in a uniform composition throughout. In a true solution, the dissolved particles are so evenly distributed at the molecular level that you can’t see them, and they don’t settle out over time. Because the components are dissolved, they aren’t easily separated by simple methods like filtration or decanting; you’d typically need more thorough techniques such as evaporation, distillation, or crystallization to separate them. The description that best fits this idea is a liquid mixture of one or more substances that cannot be separated simply. It captures both the uniform, dissolved nature and the idea that simple separation isn’t feasible. The other options describe mixtures that aren’t solutions: a mixture that can be separated easily isn’t homogeneous at the particle level; a mixture of finely ground particles that do not dissolve points to a suspension or colloid; and a medication applied to the skin is a topical product, not a solution.

A solution is a homogeneous liquid mixture where one substance (the solute) is dissolved in another (the solvent), resulting in a uniform composition throughout. In a true solution, the dissolved particles are so evenly distributed at the molecular level that you can’t see them, and they don’t settle out over time. Because the components are dissolved, they aren’t easily separated by simple methods like filtration or decanting; you’d typically need more thorough techniques such as evaporation, distillation, or crystallization to separate them.

The description that best fits this idea is a liquid mixture of one or more substances that cannot be separated simply. It captures both the uniform, dissolved nature and the idea that simple separation isn’t feasible. The other options describe mixtures that aren’t solutions: a mixture that can be separated easily isn’t homogeneous at the particle level; a mixture of finely ground particles that do not dissolve points to a suspension or colloid; and a medication applied to the skin is a topical product, not a solution.