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CAIE IGCSE Chemistry Simple Molecular Properties Explained

Practise explaining low melting or boiling points and poor conductivity by referring accurately to intermolecular forces and available charge carriers.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • explain low melting or boiling points by weak intermolecular forces requiring little energy
  • avoid saying covalent bonds break during melting because the forces overcome are between molecules
  • explain non-conduction through the absence of mobile ions or delocalised electrons

2.5.5—Simple molecular compound properties question 1

[Maximum number: 2]

The Periodic Table is a method of classifying elements.

Group V chlorides are covalent molecules. The boiling points of some Group V chlorides are shown.

Table for Question 2.5.5—Simple molecular compound properties question 1 — CAIE IGCSE Chemistry

Explain the trend in boiling points in terms of attractive forces between particles.

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