Which of the following best describes a solution in chemistry?

• A. A compound formed by a chemical reaction
• B. A homogeneous mixture of two or more substances
• C. A heterogeneous mixture with visible phases
• D. A pure substance composed of only one type of atom

Answer: (B)

Verified step by step guidance

1. Understand the definition of a solution in chemistry: A solution is a type of mixture where one or more substances (solutes) are uniformly distributed within another substance (solvent), resulting in a homogeneous mixture.
2. Recall that a homogeneous mixture means the composition is uniform throughout, and you cannot distinguish different parts by the naked eye or under a microscope.
3. Differentiate a solution from a compound: A compound is a pure substance formed by a chemical reaction with a fixed ratio of elements, whereas a solution is a physical mixture without chemical bonding between components.
4. Recognize that a heterogeneous mixture has visibly distinct phases or parts, which is not the case for a solution.
5. Conclude that the best description of a solution is 'A homogeneous mixture of two or more substances' because it accurately reflects the uniform distribution and physical nature of solutions.