Chemistry (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Chemistry — Foundation · Specification point · 1.31 · Key concepts in chemistry · Covalent bonding
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| Students should: | Maths skills |
|---|---|
1.31 Explain the formation of simple molecular, covalent substances, using dot and cross diagrams, including: a hydrogen b hydrogen chloride c water d methane e oxygen f carbon dioxide | 5b |