| Name of the property | True Solutions | Colloidal Solutions | Suspensions |
|---|---|---|---|
| 1. Size of particles | The solute particle in true solutions are molecules having diameter less than 1 nm | The particle size in colloidal solution lies in the range 1nm to 100 nm. | The size of the particles in the case of suspension is greater than 100 nm |
| 2. Visibility or Appearance | The solute particles are invisible to the naked eye as well as under the most powerful microscope | The solute particles are invisible to the naked eye but their scattering effect can be viewed with the help of a microscope. | The solute particles are visible even to the naked eye or can be seen with the help of a microscope |
| 3. Setting | The solute particles in the true solution do not settle. | The solute particles in the colloidal solution can be made to settle by centrifugation. | The solute particles in the suspension settle under gravity |
| 4. Filterability | The solute particles in the true solution diffuse rapidly, pass through a parchment membrance as well as filter paper. | The solute particles in the colloidal solution do not pass through a parchment membrane, but pass through a filter paper. | The solute particles in the suspension cannot pass through a parchment membrane or a filter paper. |
| 5. Tyndall effect | True solution does not show tyndall effect. | Colloidal solution shows tyndall effect. | Suspension may or may not show tyndall effect. |
| 6. Brownian movement | True solution does not show Brownian movement. | Colloidal solution shows Brownian movement. | Suspension may show Brownian movement. |
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