Mixtures and Separation techniques

An example of a cloudy mixture would be

• a solution

• a colloid

• a solute

• a solvent

Answer explanation

A solution would be see-through, even if it is coloured.

A solute is the substance that gets dissolved in a solution.

A solvent is a substance in which a solute dissolves.

If something is dilute, it means that

• there is a small amount of solute compared to the solvent in a solution

• there is a lot of solute compared to the solvent in a solution

• there the same amount of solute and solvent in a solution

• there is no solute in a solution

Answer explanation

The more solute dissolved, the higher the concentration of a solution.

The opposite of dilute is ______________

Answer explanation

The mixing of a solid with a liquid to form a solution is called

• suspension

• colloid

• emulsion

• dissolving

When salt is mixed with water so that the salt disappears, the salt is the_________________ in the solution

Answer explanation

A change of state from liquid to a gas is called

• evaporation

• condensation

• melting

• freezing

Answer explanation

Evaporating the solvent from a solution increases the _________________ of the solute

Answer explanation

There are 2 ways to increase the concentration of a solution:

1 - add more solute

2 - add less solvent

When you are evaporating the solution, you are also decreasing the amount of solvent in the solution

Sand is insoluble in water, which means water and sand is mixed together, they form a

• solution

• colloid

• suspension

• emulsion

Answer explanation

Solution - when 1 substance dissolves in another substance

Suspension - when 1 substance does not dissolve and the undissolved particles eventually settle to the bottom due to gravity

Colloid - when 1 substance does not dissolve in another, but stays suspended and evenly distributed and never settles to the bottom

Emulsion - a type of colloid where both substances are liquid

Pure substance or mixture?

• Pure substance

• Mixture

Pure substance or mixture?

• Pure substance

• Mixture