GCSE Chemistry Specification

Edexcel 1CH0

Section 1: (d) Covalent bonding

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#1.28

Explain how a covalent bond is formed when a pair of electrons is shared between two atoms

#1.29

Recall that covalent bonding results in the formation of molecules

#1.30

Recall the typical size (order of magnitude) of atoms and small molecules

#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