Question

What would you observe when a colloidal solution of starch is passed through an ordinary filter paper?

Answer 1

Colloids

• Colloids are a type of substance where 1-1000 nm sized particles are dispersed in a medium.
• Particles that are dispersed in the medium are called the dispersed phase and the medium in which particles are dispersed is called the dispersion medium.
• Depending upon the states of the dispersed phase and dispersion medium, different types of colloids are present like emulsion, gel, etc..,
• When light passed through the colloidal solution, the path of light becomes visible due to the scattering of light by the dispersed particles, and this phenomenon is called the Tyndall effect.
• When a colloidal solution of starch passed through the ordinary filter paper, the solution will pass through an ordinary filter paper without leaving any residue.