Separating Mixtures

A mixture is made when two or more substances are combined, but they are not combined chemically.
A mixture is the combination of two or more substances that can be easily separated.
True or False?

• False
• True

Filtration is a common method of separating an insoluble solid from a liquid. An example of a mixture is sand and water. This process involves the use of a filter paper placed in a filter funnel. The funnel is placed in a beaker and the mixture of water and sand is poured into the funnel. The liquid part drains through the filter paper into the beaker, leaving the solid sand particles trapped on the filter.
Filtration is a common method of separating an insoluble solid from a liquid.
True or False?

• True
• False

In filtration, the liquid part collected is called the filtrate and the solid bit that remained on the filter paper is called the residue.
In filtration, what is the part that remains in the filter paper called?

• Solid
• filtrate
• remainder
• residue

Evaporation is good for separating a mixture (solution) of a soluble solid and a solvent. The process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue.
Evaporation is good for separating a mixture (solution) of a soluble solid and a solvent.
True or False?

• False
• True

To remove the salt from salt water, the easiest thing to do is boil it and evaporate the water.

• True
• False

Distillation uses two changes of state. what are they?

• Evaporation and condensation
• Evaporation and freezing
• melting and boiling
• sublimation and condensation

Tags

NGSS.MS-PS1-4

Simple distillation is best for separating a liquid from a solution. It is similar to evaporation, but the vapor is collected by condensation.
What is the difference between evaporation and distillation?

• the vapor is collected by freezing
• the vapor is collected by filtration
• the vapor is collected by condensation
• the vapor is collected by heat transfer

Fractional distillation is similar to simple distillation. It is best for separating a solution of two liquids. (liquids that dissolve in each other). Fractional method takes advantage of the different boiling points of the two liquids. Fractional distillation takes a bit more time than the simple distillation.
Fractional distillation takes less time than the simple distillation.
True or False?

• False
• True

Magnetism is ideal for separating mixtures of two solids with one part having magnetic properties

How would you separate iron filings mixed with sand?

• Evaporation
• fractional distillation
• filtration
• magnetism

If a substance does not dissolve in a solvent, we say that is insoluble

• True
• False