Atom - Wikipedia
WEBAtoms 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 number of protons that are in their atoms.
Atom | Definition, Structure, History, Examples, Diagram, & Facts
WEBAug 17, 2024 · Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
What Is an Atom? Atom Definition - Science Notes and Projects
WEBNov 19, 2023 · An atom is the basic building block of matter, consisting of protons, neutrons, and electrons. An atom is the smallest unit of matter that forms a chemical element and cannot be divided using any chemical means. Every solid, liquid, gas, and plasma consists of neutral or ionized atoms.
Basic concept and structure of an atom | Britannica
WEBatom, Smallest unit into which matter can be divided and still retain the characteristic properties of an element. The word derives from the Greek atomos (“indivisible”), and the atom was believed to be indivisible until the early 20th century, when electrons and the nucleus were discovered.
Atom Definition & Meaning - Merriam-Webster
WEBThe meaning of ATOM is the smallest particle of an element that can exist either alone or in combination. How to use atom in a sentence. Did you know?
Atoms - What are they? What's inside them? - Explain that Stuff
WEBJan 24, 2024 · An atom is the smallest possible amount of a chemical element—so an atom of gold is the smallest amount of gold you can possibly have.
What is an atom? Facts about the building blocks of the universe
WEBDec 15, 2021 · What is an atom? Facts about the building blocks of the universe. References. By Daisy Dobrijevic, Tim Sharp. published 15 December 2021. Atoms are made up of a nucleus, protons and electrons....
Atom - Simple English Wikipedia, the free encyclopedia
WEBAn atom is an extremely small piece of matter. All normal matter – everything that has mass – is made of atoms. This includes solids, liquids, and gases. The atom cannot be broken to parts by chemistry, so people once thought it was the smallest piece of matter that could exist. [1]
ATOM Definition & Meaning | Dictionary.com
WEBThe 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, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons.
What is an atom? Definition, Structure, Examples
WEBSep 20, 2023 · An atom consists of the smallest particle of matter referred to as subatomic particles protons, neutrons, and electrons. The subatomic particles combine in different proportions to form atoms. These are available mostly as the form of ions and molecules to form matter that we see, feel, and touch.
Skip to content