Download - Separation techniques & mixtures
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Separation techniques & mixtures
CHOOSE JUST ONE ANSWER A, B, C, OR D
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Question 1
Which of these solids dissolves in water?
Sand chalk
SulphurSalt
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Wrong Answer!salt
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To crystallise salt
Question 2
When can filtration be used?
To separate a solid from a liquid
To separate two liquids
To separate a mixture of different coloured dyes
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Wrong Answer!To separate a solid from a liquid
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Question 3
During filtration, an insoluble solid collects in the filter paper. What is this called?
solute filtrate
residuesolvent
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Wrong Answer!residue
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Question 4
During filtration a liquid passes through the filter paper. What is this called?
chalk residue
insolublefiltrate
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Wrong Answer!filtrate
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Question 5
Which techniques could be used to get salt from a dry mixture of salt and sand
Dissolve the salt, filter the solution, recrystallise the salt
chromatography
Filter the dry mixture, crystallise the salt
Fractional distillation
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Wrong Answer!Dissolve the salt, filter the solution, recrystallise the salt
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Question 6
Sea water is a mixture, what does it consist of….?
Salt and gases water
Water, salt and gases
Water and salt
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Wrong Answer!Water, salt and gases
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Question 7
Which of these is a mixture?
oxygen Air
Quartz Copper sulphate
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Wrong Answer!Air
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Question 8
Which of these is not a mixture?
Sea water Calcium carbonate
Air Granite
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Wrong Answer!Granite
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Question 9
Which of these statement is true?
Mixtures have a fixed composition
In mixtures the atoms or compounds are joined together
Mixtures do not have a fixed composition
Mixtures are hard to separate
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Wrong Answer!Mixtures do not have a fixed composition
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Question 10
Which of these statement is true?
Compounds are easy to separate
Compounds have a fixed composition
In compounds the atoms or particles are not joined together
Compounds do not have a fixed composition
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Wrong Answer!Compounds have a fixed composition
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Congratulations!
• Your are great, well done.