Understanding Solutions, Colloids, and Suspensions

What is a solution?

• A means of solving a problem.

• A style of painting.

• A type of mathematical equation.

• A method of cooking food.

How do solutions differ from mixtures?

• Mixtures are always homogeneous and do not retain individual properties.

• Solutions are homogeneous and consist of dissolved substances, while mixtures can be heterogeneous and retain individual properties.

• Solutions do not involve any dissolved substances and are always visible.

• Solutions can be heterogeneous and consist of separate components.

What is a characteristic of colloids?

• Colloids are always transparent.

• Colloids do not scatter light.

• Colloids settle at the bottom of a container.

• Colloids exhibit the Tyndall effect.

Can you name an example of a colloid?

• Sugar solution

• Saltwater

• Milk

• Air

What is one property of suspensions?

• Suspensions do not contain any solid particles.

• Suspensions are always clear and transparent.

• Solid particles in a suspension dissolve completely.

• Solid particles in a suspension can settle over time.

How do particles behave in a suspension?

• Particles in a suspension are dispersed, can settle over time, and are larger than in a solution.

• Particles in a suspension do not settle over time.

• Particles in a suspension are smaller than in a solution.

• Particles in a suspension are completely dissolved.

What is the main component of a solution?

• solute

• suspension

• emulsion

• solvent

What happens to light when it passes through a colloid?

• Light is absorbed completely by the colloid.

• Light travels straight through without any change.

• Light is reflected back entirely by the colloid.

• Light is scattered when it passes through a colloid.

How can you separate a suspension?

• Crystallization

• Evaporation

• Filtration, centrifugation, or sedimentation.

• Distillation

What is the size range of particles in a colloid?

• 1 nm to 1 µm

• 100 µm to 1 mm

• 10 nm to 100 nm

• 1 µm to 10 µm