Pure Substances, Mixtures, and Separating Mixtures

A pure substance that cannot be broken down into other substances by chemical or physical means.

• compound          

• atom

• mixture 

• element

When making a fruit drink from a powdered mixture, the powdered mixture is the __________

• solution

• solvent

• solute

• particle

When a solvent contains as much of the solute as it can hold, the solution is said to be

• supersaturated

• diluted

• saturated

• unsaturated

Which is the best way to get salt from salty water?

• Evaporation

• Filtration

• Distillation

Pure water can be separated from inky water by simple distillation because:

• Water and ink have different boiling points

• Water evaporates leaving the ink particles behind

• Ink evaporates leaving the water behind

Tags

NGSS.MS-PS1-4

What is the correct order for obtaining salt from a mixture of sand and salt?

• Dissolving in water - filtration - evaporation

• Evaporation - filtration - dissolving in water

• Filtration - dissolving in water - evaporation

Which method is usually used to separate coloured substances from each other?

• Simple distillation

• Evaporation

• Chromatography

How could you separate iron filings from a mixture of iron and sulfur?

• Using a magnet

• By adding water and filtering

• By distillation

In filtration, what name is used to describe the solid left in the filter paper?

• Filtrate

• Residue

• Distillate

Crude oil can be separated into several liquids that have different boiling points. What is the name of this process?

• Simple distillation

• Chromatography

• Fractional distillation