Matter

The entire universe is made of matter.  In this topic, you learned that all matter is made of atoms. Every element has its own unique atomic structure and those elements combine to form compounds. The periodic table of elements organizes every known element by atomic number to help scientists map the universe on an atomic level.  Matter, atoms, and elements are a part of everything in the physical world.

There is no better way to end this topic then to listen to "The Elements Song", by Tom Lehrer. Written in 1959, "The Elements Song" playfully recites all of the chemical elements on the periodic table.