What are the properties of Colloids?
What are the properties of Colloids?
Colloids - Colloids are the heterogeneous mixture of one or more substances or compounds distributed in a solid, liquid, or gaseous medium as relatively big solid particles or liquid droplets.
Colloids consist of two parts - Dispersed phase (one present in small quantity) and dispersion medium (one present in large quantity). For example, sols, gels, aerosols, foam, etc.
Properties of Colloids
- They seem homogenous but are heterogeneous mixtures.
- They show the Tyndall effect. As the particles in colloids remain scattered and do not stabilize due to gravity.
- They possess charged particles as the charge is carried by the ions of the colloidal solution, while the dispersion medium bears an equivalent and opposite charge. The voltage on the dispersion medium balances the charge on the scattered particles, and the solution becomes electrically neutral.
- Particle size varies from 0.1 nm to 1 nm.
Tyndall Effect - The phenomenon in which a beam of light is scattered through suspended particles or colloidal particles is called the Tyndall effect. For example, milk solution, blood, smoke or dust in a room, etc.
Coagulation -Coagulation is a process of aggregation or accumulation of colloidal particles to settle down as a precipitate.
Electrophoresis - Electrophoresis is a technique used to separate macromolecules in a colloid or gel based on their charge, binding affinity, and size under an electric field.
Colloids - Colloids are the heterogeneous mixture of one or more substances or compounds distributed in a solid, liquid, or gaseous medium as relatively big solid particles or liquid droplets.
Colloids consist of two parts - Dispersed phase (one present in small quantity) and dispersion medium (one present in large quantity). For example, sols, gels, aerosols, foam, etc.
Properties of Colloids
- They seem homogenous but are heterogeneous mixtures.
- They show the Tyndall effect. As the particles in colloids remain scattered and do not stabilize due to gravity.
- They possess charged particles as the charge is carried by the ions of the colloidal solution, while the dispersion medium bears an equivalent and opposite charge. The voltage on the dispersion medium balances the charge on the scattered particles, and the solution becomes electrically neutral.
- Particle size varies from 0.1 nm to 1 nm.
Tyndall Effect - The phenomenon in which a beam of light is scattered through suspended particles or colloidal particles is called the Tyndall effect. For example, milk solution, blood, smoke or dust in a room, etc.
Coagulation -Coagulation is a process of aggregation or accumulation of colloidal particles to settle down as a precipitate.
Electrophoresis - Electrophoresis is a technique used to separate macromolecules in a colloid or gel based on their charge, binding affinity, and size under an electric field.
