Separation Techniques

To separate a mixture of salt and water what separation method is used?

• Filtration

• Distillation

• Chromatography

• Evaporation to dryness

Tags

NGSS.MS-PS1-4

Which separation technique uses the apparatus shown in the diagram?

• filtration

• evaporation

• distillation

• chromatography

What is the boiling point of water?

• 0^oC
• 100^oC
• 80^oC
• 95^oC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water and alcohol are easily separated by distillation because of their

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

Tags

NGSS.MS-PS1-4

Dyes in water soluble markers may be separated by means of

• Simple distillation

• Crystallisation

• Chromatography

• Filtration

Filtration can be used to separate...

• an insoluble solid from a solution
• a soluble solid from a solution
• a dissolved solid from a solution

Look at the apparatus setup. It cannot be used to separate which of the following mixtures? 

• Marble chips from oil 
• Alcohol and water
• Chalk from sugar solution
• Sand and sea water

Tags

NGSS.MS-PS1-2

A liquid ester used to flavour food is believed to be impure. What would be the best way of testing its purity?

• filter it

• measure its boiling point

• use paper chromatography

• evaporation to dryness

A mixture contains two substances. What property must be the two substances have for them to be separated by paper chromatography?

• Both substances must be soluble in the chromatography solvent,

• Both substances must have low boiling point.

• Both substances must be coloured.

• Both substances must be solid at room condition.

Which is the most suitable laboratory apparatus used to measure 78cm³ of distilled water?

• beaker

• graduated cylinder

• gas syringe

• pipette