1. Separation techniques & mixtures
CHOOSE JUST ONE ANSWER
A, B, C, OR D

2. Which of these solids dissolves in water?
Question 1
Which of these solids dissolves in water? A
Sand B
chalk C
Salt D
Sulphur

3. Wrong Answer!
salt
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4. When can filtration be used?
Question 2
When can filtration be used? A
To separate a solid from a liquid B
To separate two liquids C
To crystallise salt D
To separate a mixture of different coloured dyes

5. To separate a solid from a liquid
Wrong Answer!
To separate a solid from a liquid
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6. Question 3
During filtration, an insoluble solid collects in the filter paper. What is this called? A
solute B
filtrate C
solvent D
residue

7. Wrong Answer!
residue
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8. Question 4
During filtration a liquid passes through the filter paper. What is this called? A
chalk B
residue C
filtrate D
insoluble

9. Wrong Answer!
filtrate
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10. Question 5
Which techniques could be used to get salt from a dry mixture of salt and sand A
Dissolve the salt, filter the solution, recrystallise the salt B
chromatography C
Fractional distillation D
Filter the dry mixture, crystallise the salt

11. Dissolve the salt, filter the solution, recrystallise the salt
Wrong Answer!
Dissolve the salt, filter the solution, recrystallise the salt
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12. Sea water is a mixture, what does it consist of….?
Question 6
Sea water is a mixture, what does it consist of….? A
Salt and gases B
water C
Water and salt D
Water, salt and gases

13. Wrong Answer!
Water, salt and gases
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14. Which of these is a mixture?
Question 7
Which of these is a mixture? A
oxygen B
Air C
Copper sulphate D
Quartz

15. Wrong Answer!
Air
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16. Which of these is not a mixture?
Question 8
Which of these is not a mixture? A
Sea water B
Calcium carbonate C
Granite D
Air

17. Wrong Answer!
Granite
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18. Which of these statement is true?
Question 9
Which of these statement is true? A
Mixtures have a fixed composition B
In mixtures the atoms or compounds are joined together C
Mixtures are hard to separate D
Mixtures do not have a fixed composition

19. Mixtures do not have a fixed composition
Wrong Answer!
Mixtures do not have a fixed composition
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20. Which of these statement is true?
Question 10
Which of these statement is true? A
Compounds are easy to separate B
Compounds have a fixed composition C
Compounds do not have a fixed composition D
In compounds the atoms or particles are not joined together

21. Compounds have a fixed composition
Wrong Answer!
Compounds have a fixed composition
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22. Congratulations!
Your are great, well done.