Question

the combination of a solvent and a solute that cannot be separated by filtration makes a
a. suspension
b. colloid
c. solution
d. compound

Explanation:

To solve this, we analyze each option:

• Option A (Suspension): Suspensions have large particles that can be separated by filtration. So this is incorrect.
• Option B (Colloid): Colloids have particles that are too small to be seen but can be separated by special methods like centrifugation, not filtration. However, the key here is the solute - solvent combination that can't be filtered and is homogeneous at the molecular level.
• Option C (Solution): A solution is a homogeneous mixture of a solute and solvent where the solute particles are so small (molecular or ionic size) that they pass through a filter paper, so they can't be separated by filtration. This fits the description.
• Option D (Compound): A compound is a pure substance made of two or more elements chemically combined, not a combination of solute and solvent. So this is incorrect.

Answer:

C. solution