noun.

• In chemistry, it is the smallest unit of an element, composed of protons, neutrons, and electrons, and serves as the fundamental building block of molecules and chemical elements. Atoms are the basic components of everything that has mass and occupies space.

Origin

The word "atom" is derived from the French word "atome," which comes from the Ancient Greek word "atomos" (indivisible). Ancient Greek philosophers conceived atoms as the final and indivisible foundation of reality. Modern science, however, has discovered that atoms are made up of smaller particles.

Applications

• Chemistry and Physics: Atoms form the basis of chemical reactions, and studying their structure is necessary to understand matter.

• Nuclear Energy: The atomic nucleus is an important source for nuclear energy production, and nuclear reactions guide applications in this field.

• Engineering and Technology: The behavior of atoms and subatomic particles forms the foundation for nanotechnology and advanced engineering designs.

Example Sentences

• "The bonds between atoms determine chemical reactions, leading to the formation of molecules."

• "An element’s atomic number determines its properties and its position in the periodic table."