24 Questions
What is the role of fluids in living systems according to the text?
To serve as a complex mixture of colloids, ions, and molecules
In a binary solution, what defines a heterogeneous mixture?
Samples are not uniform in composition
What factors can affect the solubility of a substance?
Temperature and intermolecular forces
How is an unsaturated solution defined?
A solution capable of dissolving more solute at a given temperature
Which component of a solution is responsible for dissolving the solute?
Solvent
What defines a saturated solution?
It has maximum solubility at that temperature
Which type of colloid is known for being difficult to coagulate?
Lyophilic colloid
What is the meaning of the term 'lyophilic'?
Liquid-loving
Which term best describes colloids like silver and gold solutions?
Extrinsic colloids
What characteristic makes lyophobic colloids unstable?
Little or no affinity for dispersion medium
In which type of industrial products are colloids commonly used as thickening agents?
Lubricants and lotions
Why do lyophobic colloids require special methods for preparation?
Little or no affinity for dispersion medium
What is the main characteristic of a suspension?
Particle size greater than 1000 nm
How can a suspension be separated?
Filtration
Why does a suspension scatter a beam of light passing through it?
Large particle size
What size range do particles in a suspension typically fall into?
Greater than 1000 nm
Which statement best describes the stability of a suspension?
Unstable, settles after some time
What can be observed when looking at a suspension under a microscope?
Particles that can be easily seen
What is the main characteristic of a supersaturated solution?
It contains more solute than the maximum amount that will dissolve
In a colloidal solution, what is the dispersed phase?
The substance that is dispersed within another
What size range do colloidal particles typically fall into?
1 nanometer to 1 micrometer
Why do colloidal particles not settle down due to gravity?
Because they have a negative charge that repels each other
How can colloids be separated based on their properties?
By centrifugation
What is the phenomenon called when a strong light beam is focused on a colloidal solution?
Tyndall effect
Learn about the classification of colloids based on the interaction between the dispersion medium and the dispersed phase. Understand the characteristics of lyophilic colloids where the dispersed phase has an affinity for the dispersion medium.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
