Solutions, Suspensions and Colloids

What are examples of solutions?

Salt water and vinegar.

What type of mixture is a solution?

Homogeneous mixture.

What happens to particles in a solution?

They dissolve evenly and do not settle to the bottom.

What is the particle size range for solutions?

0.01-1 nm (nanometre).

Can particles in a solution be separated by filtration?

No, they cannot be separated by filtration.

Do particles in a solution scatter light?

No, particles do not scatter light.

What are examples of suspensions?

Chalk in water and muddy water.

What type of mixture is a suspension?

Heterogeneous mixture.

What happens to particles in a suspension?

They do not dissolve and settle to the bottom.

What is the particle size for suspensions?

1000 nm.

Can particles in a suspension be filtered?

Yes, they can be separated on standing.

Do particles in a suspension scatter light?

Yes, particles scatter light.

What are examples of colloids?

Milk, whipped cream, and gelatin.

What type of mixture is a colloid?

Heterogeneous mixture.

What is unique about the distribution of particles in a colloid?

Particles are evenly distributed but do not dissolve.

What is the particle size range for colloids?

1-1000 nm.

Do colloid particles separate on standing?

No, they do not separate on standing.

Can colloid particles be separated by filtration?

No, they cannot be separated by filtration.

What is the Tyndall effect?

It is when colloids scatter light in all directions.

What does it mean if particles separate on standing?

It means they will settle to the bottom because they are too heavy.

Why are colloids considered heterogeneous despite even distribution?

They have not dissolved like homogeneous mixtures; they remain suspended.

What does it mean to be able to separate a substance by filtration?

It means that insoluble solids can be filtered out from the mixture.