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- Dictionaryatom/ˈatəm/
noun
- 1. the smallest particle of a chemical element that can exist.
- 2. a level of amateur sport, typically involving children aged between nine and eleven: Canadian "eight atom hockey teams"
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May 20, 2024 · An atom is the basic building block of matter and chemistry, composed of protons, neutrons, and electrons. Learn about the atomic model, the periodic table, the history of atomism, and more from Britannica.
Nov 19, 2023 · Learn what an atom is, how it is composed of protons, neutrons, and electrons, and how it forms elements, isotopes, and ions. Explore the history of atomic theory, the properties of atoms, and the misconceptions and facts about them.
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 number of protons that are in their atoms.
Learn what atoms and molecules are, how they are composed of sub-atomic particles, and how they interact with each other. Explore the history, properties, and examples of atoms and molecules with videos and FAQs.
The 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?
May 5, 2019 · An atom is the basic unit of an element. An atom is a form of matter which may not be further broken down using any chemical means. A typical atom consists of protons, neutrons, and electrons. Atom Examples. Read More. Atoms Unveiled: Basics and Examples. By Anne Marie Helmenstine, Ph.D.
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, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons.
