There are lots of different substances but only just over a hundred elements. An element is a substance that is made up of only one kind of atom. The atoms in a particular element are the same as each ...

Elements and Compounds Examples: This article explains the definition of elements and compounds, their characteristics, differences, and examples. Read this to understand these terms better.

This graphic was updated on April 12, 2019, to make clear that the element phosphorus does not appear in the 20 amino acids in the human body, at least initially. These amino acids can, however, be ...

In this video excerpt from NOVA's "Hunting the Elements," New York Times technology columnist David Pogue investigates chemical reactions involving sodium. Find out how the electron configuration of ...

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...