Here's a breakdown:
Solutions:
* Particle size: The particles in a solution are extremely small, typically less than 1 nanometer (1 billionth of a meter) in diameter. They are individual atoms, ions, or molecules.
* Distribution: Particles are evenly distributed throughout the solution, meaning they are homogeneous. This means the solution has a uniform composition and appearance.
* Stability: Solutions are stable, meaning the particles remain evenly distributed and don't settle out over time.
Suspensions:
* Particle size: Particles in a suspension are much larger than those in a solution, typically ranging from 1 micrometer (1 millionth of a meter) to 100 micrometers. These particles are visible with a microscope.
* Distribution: Particles in a suspension are not evenly distributed. They are heterogeneous, meaning the composition and appearance are not uniform.
* Stability: Suspensions are unstable. The particles are not permanently suspended and will settle out over time if left undisturbed. This settling can be reversed by shaking or stirring.
Here's an analogy:
Imagine you have a glass of water.
* Solution: If you add sugar to the water and stir, the sugar molecules dissolve, becoming too small to see. They are evenly distributed, creating a homogeneous solution. The sweetness of the water confirms the sugar hasn't settled.
* Suspension: If you add sand to the water and shake it, the sand particles will be temporarily suspended. However, if you leave it alone, the sand particles will settle to the bottom, making the water cloudy. The sand isn't evenly distributed, and the system is heterogeneous.
In summary:
| Feature | Solution | Suspension |
|---------------|---------------------------------|---------------------------------|
| Particle size | Extremely small (less than 1 nm) | Relatively large (1-100 µm) |
| Distribution | Homogeneous | Heterogeneous |
| Stability | Stable | Unstable |
Important note: There is also a category called colloids which falls in between solutions and suspensions. Colloids have particles larger than solutions but smaller than suspensions. These particles are also dispersed evenly but can scatter light, making them appear cloudy. Examples of colloids include milk, fog, and paint.
