The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Browse a list of curated classroom activities by the American Association of Chemistry Teachers. Lesson Plans: The Periodic Table and Bonding Download inquiry-based lesson plans and activity sheets to ...

Can France claim the first periodic table? Probably not, but a French Geology Professor made a significant advance towards it, even though at the time few people were aware of it. Alexandre Béguyer de ...

Image caption, The element germanium was discovered in 1886. Its properties were similar to the predicted ones of Mendeleev’s ‘eka-silicon’. The modern periodic table has no gaps and has ...

1. Periodic Table as Arranged by Mendelejeff attention to the fact that “the eighth element, starting from a given one, is a kind of repetition of the first, like the eighth note of an octave in ...

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can come top in our periodic table quiz. The periodic table of elements is a ...

A team of researchers from NIMS and the University of Connecticut has developed a printing technique capable of forming a ...

A team of researchers from NIMS and the University of Connecticut has developed a printing technique capable of forming a ...

An international team of astronomers has inspected long-term evolution of quasi-periodic eruptions (QPEs) from a QPE source designated eRO-QPE2. The study found that QPEs from this source are ...