Cambridge IGCSE Combined Science practice

Paper 4 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 4Theory (Extended)2 marks

Understanding the properties of ionic compounds is essential in chemistry.

Description

Ionic compounds typically have high melting and boiling points and conduct electricity when dissolved in water.

a
Explain why ionic compounds have high melting and boiling points.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 4Theory (Extended)3 marks

Description

Sodium chloride (NaCl) consists of sodium ions (Na+) and chloride ions (Cl-) arranged in a three-dimensional lattice.

a
Describe the giant lattice structure of sodium chloride.
Your answer
Aim for approximately 3 distinct marking points.
[3]