Elements in group 1 and group 2 are metals. Atoms of group 1 elements have one electron in their outer shell, and atoms of group 2 elements have two electrons in their outer shell. Elements in groups ...
This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...
Most people wouldn't describe the periodic table of elements as gripping. But Sam Kean makes it just that in his new book, The Disappearing Spoon. The book tells the histories of the elements in the ...
"We just last month finished altering our tables," says Lisabeth Hoffman. "And now. . . " And now? Scientists, rejoice. Hoffman is a chemist who works for Sargent-Welch, a 150-year-old company that ...
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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