From atomic size to electronegativity, periodic trends reveal the hidden patterns that govern chemical behavior. By understanding electron configurations, shielding, and nuclear charge, you can ...

The periodic table of chemical elements hangs in front of chemistry classrooms worldwide and is an icon for science. Yet much was unknown about its history -- until now. The periodic table reflects ...

This lesson utilizes an adaptation of the board game Periodic: A Game of the Elements to help students better understand both general periodic trends and the law of conservation of energy. This ...

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With the United Nations declaring 2019 “the International Year of the Periodic Table,” this lighthearted look at the periodic table from chemist and high school science teacher James is perfect for ...

Science writer SAM KEAN transformed his childhood hobby of collecting Mercury from broken thermometers into his first book, “The Disappearing Spoon: and Other True Tales of Madness, Love and the ...