a
tom
Plural
atoms
1
(science) the smallest part of a chemical element that is found in the nature
- The atom is composed of a nucleus containing protons and neutrons, surrounded by electrons.
- Atoms of different elements have distinct properties based on their atomic structure.
- The concept of the atom as the fundamental building block of matter dates back to ancient Greek philosophy.
- Chemical reactions involve the rearrangement of atoms to form new compounds.
- Scientists use sophisticated instruments such as electron microscopes to observe and study the structure of atoms.