The Atom
Atomic Structure
The Atom
The atom is the smallest complete unit of matter. Elements are specific types of atoms.
Parts of the Atom
atomic number of an element = number of protons
atomic mass of an atom = number of protons + number of neutrons
atomic weight or relative atomic mass = average atomic mass of a sample of an element
The Short Story
The Long Story
The Atom Song
Bill Nye the Science Guy video