Cambridge IGCSE Combined Science practice

Paper 3 structured question: Separation and purification

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Paper

Marks

Topic

Separation and purification

Exam-style question

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Paper 3Theory (Core)2 marks

Separation techniques are essential in chemistry for purifying substances.

Description

Different techniques can be used to separate and purify substances based on their physical properties.

a
Explain the process of filtration and its applications in separating mixtures.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)3 marks

Description

Distillation is used to separate components of a mixture based on their boiling points.

a
Describe the difference between simple distillation and fractional distillation.
Your answer
Aim for approximately 3 distinct marking points.
[3]