Colloidal and True Solutions Concepts

The video tutorial explains the concepts of solutes, solvents, and solutions, including suspensions, true solutions, and colloidal solutions. It demonstrates the filtration process for different solutions and discusses the properties of each type. The Tyndall effect is introduced as a method to distinguish between true and colloidal solutions, highlighting the scattering of light by colloidal particles.

What is the role of a solvent in a solution?

• It dissolves the solute.

• It is the solid part of the solution.

• It is always a gas.

• It is the residue left after filtration.

Which of the following is a characteristic of a suspension?

• It is homogeneous.

• It cannot be separated by filtration.

• It is stable over time.

• It is heterogeneous.

Why is sand in water considered a suspension?

• It is homogeneous and stable.

• It is heterogeneous and can be separated by filtration.

• It is clear and transparent.

• It cannot be separated by filtration.

What property makes aqueous copper sulfate a true solution?

• It is homogeneous and stable.

• It can be separated by filtration.

• It is heterogeneous.

• It is opaque.

Which of the following is NOT a property of a true solution?

• Stable over time

• Homogeneous composition

• Can be separated by filtration

• Clear and transparent

Why is milk considered a colloidal solution?

• It is unstable over time.

• It appears homogeneous but is actually heterogeneous.

• It can be separated by filtration.

• It is homogeneous under a microscope.

What distinguishes a colloidal solution from a true solution?

• True solutions are opaque.

• Colloidal solutions scatter light, showing the Tyndall effect.

• Colloidal solutions are always clear.

• True solutions scatter light.

What is the Tyndall effect?

• The scattering of light by particles in a colloidal solution.

• The ability of a solution to dissolve more solute.

• The separation of components by filtration.

• The stability of a solution over time.

How can you visually distinguish a colloidal solution from a true solution?

• By observing the color change.

• By using a torch to see if light scatters.

• By measuring the temperature.

• By checking if the solution is clear.

Which solution type allows the path of light to become visible due to scattering?

• Suspension

• None of the above

• Colloidal solution

• True solution