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CAIE IGCSE Chemistry 12.1 Experimental Design Questions

Practise choosing suitable apparatus, judging experimental methods and using solution ideas such as solute, solvent and saturation.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • choose apparatus for measuring mass, volume, gas volume, temperature and time
  • describe repeat heating and weighing until a sample reaches constant mass
  • define a saturated solution using maximum dissolved solute at a stated temperature

Covered syllabus points

12.1.1—Appropriate apparatus for the12.1.2—Suggest advantages and disadvantages12.1.3—Solvent dissolves a solute

Question 1

[Maximum number: 1]

Which piece of apparatus is used to measure 24.5 cm324.5 \mathrm{~cm}^{3} of gas produced during a reaction?

A

beaker

B

conical flask

C

measuring cylinder

D

volumetric pipette

Question 2

[Maximum number: 1]

Rock salt is a mixture of salt and sand.
The method used to separate the sand from the salt is listed.
step 1 Crush the rock salt, add to warm water and stir.
step 2 Pour the mixture through a filter paper held in a funnel.
step 3 Evaporate the water to crystallise the salt.
Which statement about the method is correct?

A

The filtrate in step 2 is pure water.

B

The residue in step 2 is pure crystals of salt.

C

The solute is salt.

D

The solvent is a mixture of salt and water.

Question 3

[Maximum number: 1]

A student measures the time taken for 2.0 g of magnesium to dissolve in 50 cm350 \mathrm{~cm}^{3} of dilute sulfuric acid.

Which apparatus is essential to complete the experiment?
1 stop-clock
2 measuring cylinder
3 thermometer
4 balance

A

1, 2 and 4

B

1 and 2 only

C

1 and 4 only

D

2, 3 and 4

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