Which statement distinguishes a covalent molecule from an ionic compound?
It contains positive and negative ions in a lattice
It contains atoms joined by shared pairs of electrons
It must contain both a metal and a non-metal atom
It forms only when electrons are transferred between atoms
53 exam-style questions on Edexcel GCSE Chemistry 2.4 Covalent bonding, covering 2.4.1 Covalent bonding and simple molecules. Each one has a worked solution and a mark scheme showing where the marks go.