Using state-of-the-art molecular dynamics simulations ... Understanding how simple molecules could form increasingly complex structures helps scientists reconstruct the processes that may have ...

They have a giant lattice structure with strong ionic bonds. A lot of energy is needed to overcome these bonds. Simple molecular substances - Edexcel A covalent bond is a shared pair of electrons.

The alkanes are a homologous series with a structure based on a carbon chain ... Polymers close polymerA large molecule formed from many identical smaller molecules known as monomers.