Separation Techniques Quiz

What are mixtures?

• 2 or more elements chemically combined together

• 2 or more different substances that are not chemically combined

• Cannot be broken down into simpler substances by chemical methods

• Substances that can be separated through filtration

Sand is ________________ in water.

• soluble

• insoluble

Tags

NGSS.5-PS1-3

The mnemonics 'I Sell Chicken Nuggets' stand for... (2 answers)

• Iron, Steel, Copper, Nickel

• Iron, Steel, Cobalt, Nickel

• Magnetic metals

• Non-magnetic metals

Tags

NGSS.MS-PS2-3

Iodine changes state from solid to gas upon heating. What is used to separate iodine and sand?

• Evaporation

• Sublimation

• Fractional distillation

• Separating funnel

Oil and water can be separated using this technique because oil and water.... : (2 answers)

• are miscible, and

• are immiscible, and

• have the same densities.

• have different densities.

Tags

NGSS.MS-PS1-2

What separation technique is this?

• Crystallisation

• Sublimation

• Fractional distillation

• Distillation

What physical property of liquids enable liquid-liquid mixtures to be separated using fractional distillation?

• Colour

• Melting point

• Boiling point

• Ability to sublime

What mixture can be separated by fractional distillation?

• Ethanol and water

• Seawater

• Oil and water

• Red and yellow dye

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Since sugar decomposes upon heating, what technique is used to separate a mixture of sugar and water?

• Evaporation

• Filtration

• Crystallisation

• Paper chromatography

What must be achieved before crystallisation can occur?

• The solution must be hot.

• The solution must be fully evaporated.

• The solution must be pure.

• The solution must be saturated.