The use of the aufbau principle to predict the electron configurations of atoms (in their ground states), and therefore explain the layout of the p
A short piece arguing that hydrogen should head up group 4 (14) in the periodic table.
The algebra of quantities - how it works and how it could be used in student's chemical calculations.
Marten J. ten Hoor
As part of the new 'How science works' programme of study for key stage 4 (14-16 year-olds) taught in England and Wales, alternative layo
Students often struggle to determine whether changes in matter are physical or chemical, for example, they may have difficulty labelling a candle m
The importance of molecular oxygen, atomic oxygen, ozone and the hydroxyl radical in the Earth's atmosphere.
Tim G. Harrison
The life of Joseph Priestley and the fascinating chemistry of one of the molecules that he discovered – dioxygen (O2).
Tippu S. Sheriff