February 7 is National Periodic Table Day, when we celebrate the efforts of scientists over the centuries to figure out how different elements ...

This page uses out understanding of the atomic model and the periodic table to explore the following observations: Character conversation: two pupils discussing PCl5 breaking the octet rule. They alos ...

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

Quantum physics underlies technologies from the laser to the smartphone. The International Year of Quantum marks a century of scientific developments.

I am an inorganic chemist. Researchers in my field work to understand the chemistry of all the elements that make up the ...

‘I have a dream of walking into a chemistry lecture theatre and seeing two periodic tables – the traditional one and a periodic table in the language of the Gadigal whose land we teach on,’ says ...

How do we calculate mass and atomic numbers? VideoHow do we calculate mass and atomic numbers? This video is an interactive lesson in calculating an atom's mass and atomic number.

Periodic-Tables-Restaurant-Reservation-System is a full-stack web application developed as a capstone project for Thinkful's Bootcamp Engineering Program. The project aims to create a reservation ...

Eleven non-metals are gases at room temperature, including oxygen and chlorine. One non-metal, bromine, is a liquid at room temperature. The other non-metals are solids at room temperature ...

It has taken them away from productive use of their hands and bodies and valorized “brain work” which, in turn, has created an artificial crisis of periodic unemployment. It has snapped their ...