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  1. Molecule | Definition, Examples, Structures, & Facts | Britannica

    Jan 5, 2026 · Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that …

  2. Molecule - Wikipedia

    A molecule may be homonuclear, that is, it consists of atoms of one chemical element, e.g. two atoms in the oxygen molecule (O 2); or it may be heteronuclear, a chemical compound composed of more …

  3. What Is a Molecule? Definition and Examples

    Sep 12, 2020 · A molecule is defined as an electrically neutral group of two or more atoms connected by chemical bonds. Here are examples of molecules and a look at the difference between a molecules, …

  4. Molecule: Definition, Examples, Facts & Diagram

    Feb 2, 2023 · What is a molecule in chemistry. Learn how it is formed. Also, learn about molecular compounds and formulas with examples, facts, and diagrams.

  5. Definition and Examples of a Molecule - ThoughtCo

    Sep 3, 2024 · A molecule is two or more atoms that form chemical bonds with each other, representing the smallest unit of a chemical compound with all the physical and chemical properties of the …

  6. What Are Molecules and How Do They Form? - Biology Insights

    Jan 10, 2026 · A molecule is the smallest particle of a substance that still retains its unique chemical properties. This microscopic unit is the fundamental building block of all matter, from the air you …

  7. Molecules – Definition, Types, Characteristics, Shapes

    Jul 5, 2024 · What Is Molecule? A molecule is a group of two or more atoms bonded together, forming the smallest unit of a chemical compound that retains its chemical properties.

  8. What is a Molecule? - Chemistry Overview (Video)

    Nov 28, 2025 · When atoms share electrons, they form covalent bonds; the resulting collection of bonded atoms is what we call a molecule. Just like an atom is the smallest unit of an element, a …

  9. Definition of molecule - Chemistry Dictionary

    What is a Molecule? A molecule is a particle made up of two or more atoms that are chemically bonded together; the number of atomic nuclei making up a molecule is a determinate number.

  10. Molecule - Simple English Wikipedia, the free encyclopedia

    In the kinetic theory of gases, the term molecule is often used for any gaseous particle regardless of its composition. According to this definition, noble gas atoms are considered molecules as they are in …