atoms Definition
the basic unit of a chemical element, consisting of a nucleus of protons and neutrons, with electrons in orbit around the nucleus.
Using atoms: Examples
Take a moment to familiarize yourself with how "atoms" can be used in various situations through the following examples!
Example
The properties of different elements are determined by the number of protons in their atoms.
Example
The study of atoms and their behavior is called atomic physics.
Example
Atoms can combine to form molecules.
Phrases with atoms
the process of breaking apart the nucleus of an atom, often used in reference to nuclear weapons or energy
Example
The discovery of splitting the atom led to the development of nuclear weapons.
the process of adding or removing electrons from an atom, resulting in the formation of ions
Example
Ionization of atoms is an important process in many chemical reactions.
Example
The atomic mass of carbon is approximately 12 amu.
Origins of atoms
from Greek 'atomos', meaning 'indivisible'
Summary: atoms in Brief
'Atoms' [ˈætəmz] are the basic units of chemical elements, consisting of a nucleus of protons and neutrons, with electrons in orbit around the nucleus. The study of atoms and their behavior is called atomic physics. Phrases like 'splitting the atom' and 'ionization of atoms' refer to processes that involve atoms. 'Atomic mass' refers to the mass of an atom, expressed in atomic mass units (amu).
