Lesson 62: Mixture Separation Unit Test Review Part 1

Multiple Choice

This tool is most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

• distillation

Multiple Choice

This tool is most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

• distillation

Multiple Choice

This tool is most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

Multiple Choice

These tools are most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

• distillation

Multiple Choice

These tools are most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

• distillation

Multiple Choice

A separation funnel can be used to separate...

• Two liquids that are miscible.

• Two liquids that are immiscible.

• Two liquids that have different boiling points.

• Two liquids that have different solubilities.

Multiple Choice

This tool (a fractionating column) is most closely associated with

• filtration

• crystalization

• evaporation

• chromatography

• distillation

Multiple Choice

When using distillation to separate 3 different liquids with different boiling points, which liquid will be removed first?

• methanol

• ethanol

• propanol

Multiple Choice

Fractionating columns help condense prematurely boiling liquids. Which is NOT a reason for this:

• They get colder the higher you go

• They have lots of surface area for condensation to occur

• They filter out the smaller particles

Multiple Choice

TRUE or FALSE: At 66 °C, without a fractionating column, you might get some ethanol contamination in your condensed and collected methanol.

• TRUE

• FALSE

Multiple Choice

If you had salt water and you were trying to extract the salt from it, you would use

• distillation

• evaporation

Multiple Choice

When we separated a mixture of salt and sand in a lab, which technique did we NOT use?

• evaporation

• filtration

• distillation

Multiple Choice

If you had salt water and you were trying to extract and purify the water from it, you would use

• distillation

• evaporation

Multiple Choice

When a solute in solution could be damaged by thermal decomposition, which technique would be better to use?

• evaporation

• filtration

• crystallization

• distillation

Multiple Choice

What term describes how much of a solute can dissolve in a solvent?

• solubility

• density

• boiling point

• immiscible

Multiple Choice

The process for making rock candy and borax crystal ornaments was the same except a different ______ was used.

• separation technique

• solvent

• solute

• heat source

Multiple Choice

The different dyes used to make a marker were separated with chromatography. Which color had the GREATEST Rf value?

• blue

• purple

• red

Multiple Choice

The different dyes used to make a marker were separated with chromatography. Which color had the SMALLEST Rf value?

• blue

• purple

• red

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Choice

Which dye is probably the LEAST soluble in the solvent used?

• blue

• purple

• red

Multiple Choice

With a sharpie marker, why did the dot not move on the chromatography paper with a water solvent, but it did move with an alcohol solvent?

• Sharpie dyes are only soluble in water.

• Sharpie dyes are only soluble in alcohol.

Multiple Choice

At 30 °C, how much potassium iodide will dissolve in 100 mL of water?

• 30g

• 90g

• 180g

• 220g

Multiple Choice

At 30 °C, if 40g of potassium iodide are dissolved in 100mL of water, the solution will be

• unsaturated

• saturated

• supersaturated

Multiple Choice

At 30 °C, if 190g of potassium iodide are dissolved in 100mL of water, the solution will be

• unsaturated

• saturated

• supersaturated