Atoms can form strong bonds with each other, making molecules. Symbols and formulae Letters from the alphabet are used to represent chemical elements. An element’s chemical symbol is a single ...

Students could use beads, sweets, balls or themselves to build models of the positions of particles in the atoms of different elements.

Researchers at the Karlsruhe Institute of Technology (KIT) have synthesized a Bi5⁻ ring, a molecule with five bismuth atoms, ...