What is the Difference Between Solution and Suspension?

The main difference between a solution and a suspension is the particle size and homogeneity of the mixtures. Here are the key differences:

• Solution: A solution is a homogeneous mixture where the particles are very small, typically less than 1 nanometer in size. The particles are dissolved in a solvent, and the composition remains the same throughout the mixture. Solutions appear transparent and do not scatter light. Examples of solutions include salt (NaCl) in water or sugar in water.
• Suspension: A suspension is a heterogeneous mixture where the particles are much larger, generally over 1,000 nanometers in size. The particles do not dissolve in the solvent and can be visibly distinguished, causing the composition to not remain the same throughout the mixture. Suspensions appear cloudy due to the scattering and reflection of light, and they will eventually separate over time. Examples of suspensions include milk of magnesia, which is a suspension of magnesium hydroxide, and sand in water.

In summary, solutions are homogeneous mixtures with small particles that are dissolved in a solvent, while suspensions are heterogeneous mixtures with large particles that do not dissolve and can be readily seen.

Comparative Table: Solution vs Suspension

Here is a table comparing the differences between solutions and suspensions:

In summary, a solution is a homogeneous mixture with a clear and transparent appearance, where particles are molecule-sized and do not scatter light. In contrast, a suspension is a cloudy, heterogeneous mixture with larger particles that can scatter light and eventually settle out.