15 Questions
What is the primary characteristic of lyophilic colloids?
They have a strong interaction between the dispersed phase and dispersion medium
Which type of colloid is likely to have a weak interaction between the dispersed phase and dispersion medium?
Lyophobic colloid
What is the purpose of the dispersion medium in a colloidal system?
To facilitate the interaction between the dispersed phase and the solvent
What is the term used to describe the layer of solvent molecules surrounding the colloidal particles?
Solvent sheath
Which type of colloid is characterized by the presence of a solvent sheath?
Lyophilic colloid
What type of dispersion is characterized by a dispersed phase with a size range of 1-10 nanometers?
Colloidal dispersions
Which of the following types of colloids are stabilized by a solvent sheath?
Lyophilic colloids
What type of colloid is formed when a dispersion medium is added to a lyophilic sol?
Lyophilic colloid
Which of the following types of colloids are characterized by the presence of a dispersion medium?
All types of colloids
What type of colloid is characterized by the association of molecules to form a micelle?
Association colloid
What type of colloids do materials form with relative ease due to their affinity for the dispersion medium?
Lyophilic Colloids
What is the primary reason for the formation of colloidal dispersions or sols?
High affinity of the material for the dispersion medium
What is the term used to describe the layer of dispersion medium surrounding a colloidal particle?
Solvent Sheath
Which of the following is NOT a characteristic of Lyophobic Colloids?
High affinity for the dispersion medium
What is the term used to describe colloids that are formed by the association of surfactant molecules in a dispersion medium?
Association Colloids
Study Notes
Colloidal Systems
- Colloidal materials form colloidal dispersions or sols with relative ease due to their affinity for the dispersion medium.
Types of Colloidal Systems
- Classified according to the interaction between the dispersed phase and dispersion medium.
Lyophilic Colloids
- Contain colloidal particles that interact with the dispersion medium to an appreciable extent.
- Referred to as solvent-loving (lyophilic) colloids.
- Three types of dispersed systems based on the size of the dispersed phase:
- Molecular dispersions
- Colloidal dispersions
- Coarse dispersions
This quiz covers the properties of materials that easily form colloidal dispersions or sols due to their affinity for the dispersion medium. Learn about the characteristics of these materials and their behavior in different solutions.
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