The smallest particle of an element or a compound that can exist on its own is called ______. (a molecule/an atom)
The smallest particle of an element or a compound that can exist on its own is called an atom.
Atoms- The smallest unit of matter that exhibits the same physical and chemical properties as the element is called an atom.
Important points about atoms:
Therefore, the smallest particle of an element or a compound that can exist on its own is called an atom.