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
Journal Article
Padlock
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
Journal Article
Padlock
Students often struggle to determine whether changes in matter are physical or chemical, for example, they may have difficulty labelling a candle m
Journal Article
Padlock