Cambridge IGCSE Combined Science practice

Paper 3 structured question: Ions and ionic bonds

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Paper

Marks

Topic

Ions and ionic bonds

Exam-style question

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Paper 3Theory (Core)3 marks

Ionic compounds are formed from cations and anions.

Description

Ionic compounds consist of cations and anions that are held together by ionic bonds due to their opposite charges.

a
Describe the role of cations and anions in the formation of ionic compounds.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 3Theory (Core)2 marks

Description

Ions are formed when atoms lose or gain electrons. Cations are positively charged ions, while anions are negatively charged ions.

a
Explain how cations and anions are formed.
Your answer
Aim for approximately 2 distinct marking points.
[2]