Characteristics and Properties of Suspensions

The video explains the concept of suspensions, using cough syrup as an example. It describes how suspensions are heterogeneous mixtures with particles that settle over time. Various examples, such as chocolate drinks and blood, illustrate the concept. The video concludes with a review and questions.

Why is it important to shake a bottle of cough syrup before using it?

• To change the color of the syrup

• To make it taste better

• To mix the syrup with air

• To ensure the particles are evenly distributed

What is a key characteristic of a suspension?

• Particles are magnetic

• Particles settle when undisturbed

• Particles are invisible

• Particles dissolve completely

Which of the following is an example of a suspension?

• Oil mixed with vinegar

• Cocoa powder in water

• Salt dissolved in water

• Sugar in tea

What happens to the particles in a suspension when it is left undisturbed?

• They dissolve

• They float to the top

• They evaporate

• They settle at the bottom

Why does cocoa powder not fully dissolve in water?

• It is too heavy

• It is insoluble

• It is magnetic

• It is too light

What process can separate plasma from blood cells?

• Distillation

• Evaporation

• Centrifugation

• Filtration

What is the result of centrifugation on blood?

• Blood becomes solid

• Plasma and blood cells separate

• Blood cells dissolve

• Blood changes color

Which of the following is NOT a suspension?

• Flour in water

• Oil in water

• Sand in water

• Salt in water

What is a common trait of substances in a suspension?

• They are invisible

• They do not mix well

• They mix well

• They are magnetic

What is the main takeaway about suspensions?

• They consist of particles that settle over time

• They are always homogeneous

• They require constant stirring

• They are only found in liquids