Chemistry (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Chemistry (Modular) — 4XSD1 · Specification point · 5.12 · Principles of chemistry: Part 2 · Covalent bonding
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| Learners should: |
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5.12 explain why the melting and boiling points of substances with simple molecular structures increase, in general, with increasing relative molecular mass |