Which of the following statements correctly describes a heterogeneous mixture in relation to a solution?

• A. A heterogeneous mixture is a type of solution with uniform composition throughout.
• B. A heterogeneous mixture is not a solution because its components are not uniformly distributed.
• C. A heterogeneous mixture and a solution are both pure substances.
• D. A heterogeneous mixture is always composed of a single element.

Answer: (B)

Verified step by step guidance

1. Understand the definition of a solution: A solution is a homogeneous mixture where the components are uniformly distributed at the molecular level.
2. Recognize that a heterogeneous mixture consists of components that are not uniformly distributed, meaning you can often see different parts or phases.
3. Compare the two: Since a solution requires uniform composition throughout, a heterogeneous mixture cannot be classified as a solution.
4. Evaluate the given statements: The statement that a heterogeneous mixture is not a solution because its components are not uniformly distributed aligns with the definitions.
5. Note that heterogeneous mixtures and solutions are mixtures, not pure substances, and heterogeneous mixtures can contain multiple elements or compounds, not just a single element.