The slideshow shows how a covalent bond forms between a hydrogen atom and a chlorine atom, making hydrogen chloride. A simple molecule contains only a few atoms, so the sizes of atoms and simple ...

They too are held together by very strong covalent bonds. There are greater intermolecular forces between the long chains compared with smaller simple molecules. This means that polymers have a ...

With the soaring popularity of orthodontics, driven by teeth straightening via near-invisible braces, comes another rising dental tweakment: 'edge bonding'. While specialised, it is among the ...