The news broke that a railroad car, loaded with pure sodium, had just derailed and was spilling its contents. A television reporter called me for an explanation of why firefighters were not allowed to ...

In the wee hours of the late 17th century, Isaac Newton could be found locked up in his laboratory prodding the secrets of nature. Giant plumes of green smoke poured from cauldrons of all shapes and ...

I highly recommend Wonderful Life with the Elements as a companion to the science classroom. Our world, everything we know, can be distilled into 188 elements. The very thought is fascinating in its ...

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 ...

The periodic table isn’t just a list of elements—it’s a map of predictable patterns called periodic trends. These trends, like atomic radius, electronegativity, and ionization energy, help scientists ...

Students learn to describe the pattern in atomic number, atomic mass and atomic radius. Trends on the Periodic Table: Students learn to describe the pattern in atomic number, atomic mass, atomic ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. This year is the International Year of the Periodic Table of Chemical Elements—and today (March 6), the modern version ...

The periodic table may be one of the greatest accomplishments in information visualization. Its simple approach–lining and layering atoms by number of protons–is something that anyone can understand.