118 Elements and Their Symbols and Atomic Numbers: The periodic table is a well-organized chart that contains all the known elements in the universe.These elements are building blocks of matter ...

Dr. Tim: So this is the periodic table and each letter on it represents a different element. We call these letters symbols. And an element is a pure substance made from only one type of atom.

The Lunar New Year kicks off on Jan. 29, 2025. Here's what to know about the year of the Wood Snake, from the personality ...