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- 1. Fill in the Blank
Complete the statement below.
A mixture contains two or more different substances that are not .......... combined.
- 2. Multiple Choice
Which method(s) below is suitable to obtain salt from a salt solution?
distillation
dissolving
filtration
evaporation
- 3. Multiple Choice
Which method(s) below is suitable to obtain pure water from a salt solution?
distillation
dissolving
filtration
evaporation
- 4. Multiple Choice
The colour of plant leaves is due to a mixture of pigments.
Which method is used to separate these pigments?
filtration
evaporation
distillation
chromatography
- 5. Multiple Choice
Ms Lenny wants to separate a mixture of sand and salt.
Which option below can she use to obtain the sand from the mixture?
filtration only by pouring mixture of sand and salt through filter paper
dissolving only by adding water to mixture
dissolving first then use filtration
dissolving first then use evaporation
- 6. Multiple Choice
Which processes take place during distillation?
Hint: There are 2 processes.
freezing
boiling
condensation
melting
- 7. Multiple Choice
Which of the following mixtures can be separated using the set-up shown?
sea water (made up of salt, water and some minerals)
sand and salt
drop of ink
sugar solution (made up of sugar and water)
- 8. Multiple Choice
Chromatography is commonly used in food testing to identify the presence of banned additives in food.
Which additive(s), P, Q, R or S is/are present in Chewy Candy?
P and R
P and S
Q and R
Q and S
- 9. Fill in the Blank
What is substance W known as?
- 10. Fill in the Blank
What is the apparatus labelled X known as?
- 11. Multiple Choice
Through which outlet (A or B) does cold water enters apparatus X?
A
B
- 12. Multiple Choice
Muddy water is filtered using filter paper and filter funnel. The mud stays on the filter paper.
Why does the mud stay on the filter paper?
The mud reacts with the filter paper.
The particles of mud are too large to pass through the holes in the filter paper.
The particles of the water stop the mud going through.
The particles of water make the filter paper wet.
- 13. Multiple Choice
Why is evaporation not a suitable method to obtain sugar from sugar solution?
Sugar will evaporate as vapour.
Sugar will decompose and turn black upon heating.
Sugar will become smaller particles.
Sugar will take a long time to form.
- 14. Multiple Choice
In paper chromatography, the dye that is most soluble in the solvent will travel the .....
fastest
slowest
- 15. Multiple Choice
Which ink, W, X or Y is a pure substance based on the chromatogram shown?
W
X
Y
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