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Atom - Wikipedia
https://en.wikipedia.org/wiki/Atom
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.
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Atom | Definition, Structure, History, Examples, Diagram, & Facts
https://www.britannica.com/science/atom
WebFeb 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.
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What Is an Atom? Atom Definition - Science Notes and Projects
https://sciencenotes.org/what-is-an-atom-atom-definition/
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.
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What is an atom? Facts about the building blocks of the universe
https://www.livescience.com/37206-atom-definition.html
WebDec 15, 2021 · Atoms are made up of a nucleus, protons and electrons. Atoms consist of a nucleus made of protons and neutrons orbited by electrons.(Image credit: Rost-9D via Getty Images) Jump to: Subatomic...
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Basic concept and structure of an atom | Britannica
https://www.britannica.com/summary/atom
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.
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Introduction to the atom (video) | Khan Academy
https://www.khanacademy.org/science/biology/chemistry--of-life/elements-and-atoms/v/introduction-to-the-atom
WebLearn how atoms are made up of protons, neutrons, and electrons. Elements are defined by the atomic number, the number of protons in the nucleus. The mass of an atom is determined by the total number of protons and neutrons. Created by Sal Khan.
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Atom - Development, Theory, Structure | Britannica
https://www.britannica.com/science/atom/Development-of-atomic-theory
WebHome Science Physics Matter & Energy. Summarize This Article. Development of atomic theory. The concept of the atom that Western scientists accepted in broad outline from the 1600s until about 1900 originated with Greek philosophers in the 5th century bce.
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The Structure of the Atom – Introductory Chemistry
https://uen.pressbooks.pub/introductorychemistry/chapter/the-structure-of-the-atom/
WebAn atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms combine to form molecules, which then interact to form solids, gases, or liquids. For example, water is composed of hydrogen and oxygen atoms that have combined to form water molecules.
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Matter, elements, and atoms | Chemistry of life (article) - Khan Academy
https://www.khanacademy.org/science/ap-biology/chemistry-of-life/elements-of-life/a/matter-elements-atoms-article
WebAn atom is the smallest unit of matter that retains all of the chemical properties of an element. For example, a gold coin is simply a very large number of gold atoms molded into the shape of a coin, with small amounts of other, contaminating elements.
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2.2: Atomic Structure - Chemistry LibreTexts
https://chem.libretexts.org/Courses/Brevard_College/CHE_103_Principles_of_Chemistry_I/02%3A_Atoms_and_Molecules/2.02%3A_Atomic_Structure
WebMay 18, 2021 · Figure 2.2.1 2.2. 1: The Structure of the Atom. Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different.
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