Researchers have identified the ingredients in chemistry formulas from an 2,300-year-old Chinese text, revealing ancient metallurgy was more complex than expected. The Kaogong ji was written in China ...

A useful (although not flawless) reference for chemistry students, this app includes a very nicely annotated periodic table that displays many properties beyond just the atomic weight of each element ...

It seems like every other day we hear about some hacker, tinkerer, maker, coder or one of the many other Do-It-Yourself engineer types getting their hands into a complex field once reserved to only a ...

Chemical Reactions - Ionic Formula Writing: Students learn how to write formulas. Chemical Reactions - Ionic Formula Writing Students learn how to write formulas for a variety of ionic compounds ...

In 1923, the year C&EN was born, Gilbert N. Lewis of the University of California, Berkeley, published a book titled “Valence and the Structure of Atoms and Molecules.” In the text, Lewis laid out the ...

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