Mixtures

Two or more substances mingled together, but not chemically combined are known as a

• residue
• solution
• distillate
• mixture

Which of the following pairs of substances may best be separated through distillation

•  sand and soil
• water and soil
• salt and sand
•  water and alcohol

Tags

NGSS.MS-PS1-4

Which one of the following techniques would best be used to separate soil and water?

• Decanting
• distillation
• Filtration
• Chromatography

Name the separation technique shown in the diagram.

• evaporation
• distillation
•  filtration
• decanting

Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:

• evaporation followed by filtration
•  distillation followed by decanting
• filtration followed by evaporation
• filtration followed by decanting

Which one of the following would you use to separate sand from iron filings?

• a bar magnet
• filter paper
• chromatography paper
• alum

Tags

NGSS.MS-PS2-5

Water and alcohol are easily separated by distillation because of their

•  different melting points
• different colours
• different densities
• different boiling points

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Liquids that do not mix may be separated by using..

• an evaporating dish
• a separating funnel
• a loading
• a sedimentation

To separate iron filings and sulfur what method should you use?

• filtration 
• sorting
• magnet
• boiling

Tags

NGSS.3-PS2-3

NGSS.3-PS2-4

Which of the following is a method of separating solutions?

• hand separation
• filtering
• decanting
• evaporation 

Tags

NGSS.5-PS1-4