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CAIE IGCSE Chemistry 2.4.4 Properties of Ionic Compounds a Questions

Describe ionic compounds in CAIE IGCSE Chemistry using their high melting or boiling points and contrasting electrical conductivity in solid, molten and aqueous conditions.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • Describe ionic compounds as having high melting or boiling points and conducting electricity when molten or aqueous, but not when solid.
  • State melting or dissolving in water as a way to make the specified solid ionic compound conduct electricity.
  • Identify an ionic substance from a property table by contrasting poor solid conductivity with good liquid conductivity and high melting or boiling points.

CAIE IGCSE Chemistry 2.4.4 Properties of Ionic Compounds a Questions question 1

[Maximum number: 1]

The structures of three substances are shown.

1

1

2

2

Which substances are hard and have a high melting point?

3

3

A

1, 2 and 3

B

1 only

C

2 only

D

2 and 3 only

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