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  1. Atom - Wikipedia

    Though the word atom originally denoted a particle that cannot be cut into smaller particles, in modern scientific usage the atom is composed of various subatomic particles.

  2. Atom

    Dec 15, 2022 · Atom is a desktop application built with HTML, JavaScript, CSS, and Node.js integration. It runs on Electron, a framework for building cross platform apps using web technologies. Atom is …

  3. Atom | Definition, Structure, History, Examples, Diagram, & Facts ...

    2 days ago · An atom is the 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 …

  4. 1.2: Structure of an atom - Chemistry LibreTexts

    Nov 28, 2025 · According to the modern view of an atom, protons and neutrons are in the center of the atom in a region called the nucleus, and the electron cloud is around the nucleus.

  5. What is an atom ? | Nuclear Regulatory Commission - NRC

    Anything that has a mass—in other words, anything that occupies space—is composed of atoms. While its name originally referred to a particle that couldn't be divided any more—the smallest thing …

  6. A. What is an Atom? - Linda Hall Library

    3 days ago · An atom is the smallest particle into which an element can be divided without losing its chemical identity. Atoms consist of a heavy central nucleus surrounded by a cloud of negatively …

  7. The Atom - Science for Everybody

    Learn about the structure of the atom, subatomic particles, electron arrangement, atomic and mass numbers, and isotopes. Includes worked examples and key definitions to support understanding.

  8. What is Atom? - GeeksforGeeks

    Jul 23, 2025 · An atom is the basic building block of matter and all the thing around us is made up of combing atoms in different proportions. Let's learn more about Atom, its constituents, and its …

  9. What Is an Atom? Atom Definition - Science Notes and Projects

    Nov 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 …

  10. Atom: Definition, Structure, & Parts with Labeled Diagram

    Feb 29, 2024 · All living organisms and nonliving objects found on Earth are made of trillions and trillions of atoms. The smaller particles that make up an atom are known as subatomic particles. The term …