Name the separation technique used to recover the salt from seawater.

• evaporation

• distillation

• filtration

• decanting

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

• residue

• solution

• distillate

• mixture

In a coffee machine, the ground coffee is separated from the coffee solution by using..

• sand paper

• filter paper

• toilet paper

• tissue paper

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

Making a mixture results in ___________________ only.

• chemical reactions
• separate parts
• physical changes
• two subtances

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

• filtration 
• sorting
• magnet
• boiling

Tags

NGSS.3-PS2-3

NGSS.3-PS2-4

To separate the sugar and lemonade, what method should you use?

• filtration

• hand separation

• magnet

• evaporation

In an experiment the factors we keep the same are called:  

• experimental variables
• controlled variables 
• independent variables
• dependent variables

Dyes in water soluble markers may be separated by means of..

• crystallization

• sublimation

• chromatography

• sedimentation