No, sand in water is not a solution.
Understanding Solutions vs. Suspensions
A solution is a homogeneous mixture where a solute (like sugar) dissolves completely in a solvent (like water), resulting in a uniform composition throughout. The particles are so small they are invisible to the naked eye. Conversely, a suspension is a heterogeneous mixture where particles of a solid (like sand) are dispersed in a liquid but do not dissolve. These particles are visible and will eventually settle out.
As stated by Flexi Says, "Sand in water is a suspension". The sand particles are larger and do not dissolve in the water; they remain dispersed and will eventually settle to the bottom of the container. This is confirmed by numerous sources, including Byju's which states that "When sand is dissolved in water, it does not evenly mix with water and after some time it will settle down in the container." Therefore, it is a heterogeneous mixture, not a homogenous solution.
Several references support this classification:
- Chemistry LibreTexts: Explicitly states that "A mixture of sand and water forms a suspension."
- Everett School District: Clearly differentiates between a homogeneous sugar-water solution and a heterogeneous sand-water mixture.
- Brainly: Explains that a sand-water mixture isn't a solution because it's not a homogeneous mixture.
Examples of Solutions and Suspensions
- Solution: Saltwater (salt dissolved in water), sugar dissolved in water.
- Suspension: Sand in water, mud in water, flour in water.
