at·om
at·om/ˈadəm/
noun
the basic unit of a chemical element.
synonyms: particle, molecule, bit, little bit, tiny bit, tiny piece, fragment, fraction, grain, granule, crumb, morsel, mite, mote, speck, spot, dot, iota, jot, whit, scrap, shred, trace, tinge, ounce, modicum, scintilla, vestige, stim, smidgen, smidge, tad, scantling, scruple
People also ask
Which definition best describes an atom?
An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.
What is the definition of an atom in a sentence?
1. An atom is the smallest amount of a substance that can take part in a chemical reaction. ... the news that Einstein's former colleagues Otto Hahn and Fritz Strassmann had split the atom. Synonyms: particle, bit, spot, trace More Synonyms of atom.
Atom | Definition, Structure, History, Examples, Diagram, & Facts
www.britannica.com › science › atom
May 20, 2024 · Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of ...
Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an ...
Atom
Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the... Wikipedia
noun · The smallest unit of an element, consisting of at least one proton and (for all elements except hydrogen) one or more neutrons in a dense central nucleus ...
3 days ago · an atom of hydrogen. b. : the atom considered as a source of vast potential constructive or destructive energy.
The tiny particles called atoms are the basic building blocks of all matter. Atoms can be combined with other atoms to form molecules, but they cannot be ...
The smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and ...
Jan 29, 2023 · The atom is the smallest unit of matter that is composed of three sub-atomic particles: the proton, the neutron, and the electron. Protons and ...
the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form a molecule.
The atom is considered the basic building block of matter. Anything that has a mass—in other words, anything that occupies space—is composed of atoms. While its ...