Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

Inorganic elements and their complexes underpin a vast array of physiological processes. Essential metal ions such as calcium, magnesium, iron and zinc act as structural components of bone and ...

This video explains the periodic table, containing all the known elements arranged in groups and periods. Elements in the same group of the periodic table show trends in physical properties, such as ...