Colloids, Solutions, and Suspensions

The video tutorial explains the differences between solutions, suspensions, and colloids. A solution is a homogeneous mixture of a solute in a solvent, where the solute dissolves completely. A suspension is a mixture where the non-dissolved material separates on standing. A colloid is a mixture where the substance remains dispersed and does not settle. The video includes activities to demonstrate each type of mixture, helping to illustrate their unique characteristics.

What is a solution?

• A heterogeneous mixture of liquids

• A mixture of two gases

• A homogeneous mixture of a solute in a solvent

• A mixture of two solids

In a solution, what is the role of the solvent?

• It is the substance that is present in the least amount

• It is the substance that reacts with the solute

• It is the substance that dissolves in the solute

• It is the substance in which the solute dissolves

What happens when salt is mixed with water?

• The salt remains visible

• The salt changes color

• The salt forms a separate layer

• The salt dissolves completely forming a clear solution

What is a suspension?

• A homogeneous mixture of a solute in a solvent

• A mixture of water and a non-dissolved material

• A solution where the solute is completely dissolved

• A mixture of two gases

What characteristic is observed in a suspension?

• The mixture remains uniform

• The solute dissolves completely

• The mixture separates on standing

• The mixture changes color

What is a colloid?

• A solution where the solute settles at the bottom

• A solution where the substance remains dispersed and doesn't settle

• A homogeneous mixture of gases

• A mixture of two solids

In a colloid, what happens to the dispersed particles?

• They settle at the bottom

• They dissolve completely

• They remain suspended and do not settle

• They form a separate layer

What is observed when flour is mixed with water in a colloid activity?

• The flour changes color

• The flour forms a separate layer

• The flour particles remain suspended

• The flour dissolves completely

Which of the following is a key difference between a solution and a suspension?

• Both are heterogeneous

• Both are homogeneous

• Solutions are homogeneous, suspensions are heterogeneous

• Solutions are heterogeneous, suspensions are homogeneous

What is a common feature of colloids?

• The dispersed particles form a separate layer

• The dispersed particles remain suspended

• The dispersed particles dissolve completely

• The dispersed particles settle at the bottom