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WorksheetsSeparation Techniques Quiz
Total questions: 21
Worksheet time: 11mins
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
The mnemonics 'I Sell Chicken Nuggets' stand for... (2 answers)
Iron, Steel, Copper, Nickel
Iron, Steel, Cobalt, Nickel
Magnetic metals
Non-magnetic metals
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.
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
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.
Identify the separation technique and the mixture it can separate (2 answers)
Distillation
Fractional distillation
Oil and water
Salt and water
Identify the separation technique and the mixture it can separate (2 answers)
Sublimation
Evaporation
Ethanol and water
Salt and water
I want to obtain pure water from a saltwater mixture. What technique should I use?
Distillation
Evaporation
Filtration
Separating funnel
This experiment shows a simple distillation of saltwater. What is found inside the receiving beaker? (2 answers)
Filtrate
Distillate
Pure water
Saltwater
Salt is ________________ in water.
soluble
insoluble
A mixture contains chalk powder and salt. How do we separate this mixture?
Filter the mixture.
Dissolve it in water, then evaporation.
Dissolve it in water, filtration, then evaporation.
Dissolve it in water, evaporation, then filtration.
In this filtration set-up, what is X (solid in the filter paper) and Y (liquid in the beaker)?
X - residue, Y - distillate
X - residue, Y - filtrate
X - impurities, Y - distillate
X - impurities, Y filtrate
Why are the spots at different positions on the chromatogram?
They have different mass.
They have different solubilities.
They have different melting points.
They are at different temperatures.
The diagram shows a chromatogram of the analysis of three ink samples, X, Y and Z. Which is true?
Sample X contains ink sample Y.
Samples X and Z are the same.
Sample X contains ink sample Z.
Samples X, Y and Z are mixtures.
Why must the start line be drawn in pencil?
So that it can be erased.
It will not dissolve and interfere with the results.
Someone gave me a free pencil.
Because Ms Tan says so.
Do I promise to submit all future assignments punctually?
Yes
No
Erm...
Huh?
