Which of the following best describes the difference between a solution and a suspension?

• A. A solution always conducts electricity, while a suspension never does.
• B. A solution is a homogeneous mixture where the solute is completely dissolved, while a suspension is a heterogeneous mixture with visible particles that can settle out.
• C. A solution contains only solids, while a suspension contains only liquids.
• D. A solution can be separated by filtration, but a suspension cannot.

Answer: (B)

Verified step by step guidance

1. Understand the definitions of the key terms: A solution is a homogeneous mixture where the solute particles are completely dissolved at the molecular or ionic level, resulting in a uniform composition throughout.
2. Recognize that a suspension is a heterogeneous mixture where the particles are larger, not dissolved, and can be seen with the naked eye or under a microscope; these particles tend to settle out over time due to gravity.
3. Note that because solutions are homogeneous, their components cannot be separated by simple filtration, whereas suspensions can often be separated by filtration since the particles are large enough to be trapped by a filter.
4. Consider the electrical conductivity: solutions containing ions can conduct electricity, but this is not a defining characteristic that distinguishes solutions from suspensions universally, as it depends on the nature of the solute.
5. Evaluate the given options based on these concepts to identify the statement that correctly contrasts a solution and a suspension in terms of homogeneity, particle size, and behavior.