Atoms: The Fundamental Units of Matter
Atoms are the smallest units of matter that retain the properties of an element. They are the building blocks of all substances—everything we see, touch, and even breathe is made up of atoms. First conceptualized in ancient Greece, the modern scientific understanding of atoms has developed through centuries of discovery, leading to our current knowledge of atomic structure and behavior. Structure of an Atom An atom is composed of three primary subatomic particles: Protons : Positively charged pa
