Group 1 elements react with moist air. They are stored in oil to stop air and water vapour coming into contact with them. Moist air reacts with potassium to form potassium oxide. This creates a ...

Sodium and chlorine react vigorously when heated, giving an orange flame and clouds of white sodium chloride. Damp litmus paper is bleached white when it is placed in chlorine. If damp-blue litmus ...

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

Researchers from the University of Würzburg are opening up new horizons in chemistry: They present the world's first triple ...

Most rare earth elements are lanthanides – elements from 57 (lanthanum) to 71 (lutetium) on the periodic table. They have similar chemical properties but differ in size. “Because it has no ...

A new compound containing one of the rarest elements in the world, promethium, has revealed its mysterious properties for the ...

Boron, carbon, nitrogen and oxygen: these four elements can form chemical triple bonds with each other due to their similar ...

Now each chemical element had its number and ... Soon, Mendeleev was predicting the properties of three elements – gallium, scandium and germanium – that had not then been discovered.