The simplest way to check whether a system is colloidal

Options

A. Tyndall effect
B. Browmian movement
C. Electrodialysis
D. Finding out particle size

Answer

To determine whether a system is colloidal, we can follow these steps based on the Tyndall effect:

### Step-by-Step Solution:

1. **Prepare the Sample**: Obtain the solution you want to test for colloidal properties. Ensure that it is in a clear container to allow light to pass through easily.

2. **Set Up a Light Source**: Use a coherent light source, such as a laser pointer or a flashlight. This will provide a focused beam of light that can be directed through the solution.

3. **Direct Light Through the Solution**: Shine the light beam through the sample of the solution. Make sure the light passes through the center of the container to maximize visibility.

4. **Observe the Scattering of Light**: Look for any scattering of light as it passes through the solution. If the light beam becomes visible and you can see a path of light (often referred to as a "light cone"), this indicates that the light is being scattered by particles in the solution.

5. **Conclusion**: If you observe the scattering of light, then the solution is colloidal. If there is no scattering and the light passes straight through without any visible path, the solution is not colloidal.