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  1. Molecule - Wikipedia

    The modern concept of molecules can be traced back towards pre-scientific and Greek philosophers such as Leucippus and Democritus who argued that all the universe is composed …

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

    Nov 15, 2025 · 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 …

  3. What Is a Molecule? Definition and Examples

    Sep 12, 2020 · Get the definition of a molecule. See examples of molecules and learn the different between a molecule and a compound.

  4. Definition and Examples of a Molecule - ThoughtCo

    Sep 3, 2024 · Here's an explanation of what a molecule is (and is not) with examples of common molecules. A molecule is two or more atoms that form chemical bonds with each other, …

  5. What Are Molecules? A Definition for Beginners - Biology Insights

    Aug 25, 2025 · Molecules are the fundamental building blocks of all matter, from the air we breathe to the cells in our bodies. These tiny particles are organized in specific ways, and …

  6. Molecule: Definition, Examples, Facts & Diagram

    Feb 2, 2023 · All objects that we see around us are made of molecules. From living objects such as a plant or an animal, including humans, inanimate objects like a chair, table, wall, door, …

  7. Molecules and compounds overview - Khan Academy

    When atoms combine by forming covalent bonds, the resulting collection of atoms is called a molecule. We can therefore say that a molecule is the simplest unit of a covalent compound. …

  8. Molecules - Chemistry Encyclopedia - structure, water, examples, …

    As much as a car is a single unit made up of many parts, a molecule is a unit made up of atoms bonded around each other in certain fixed geometries. Shapes influence the physical and …

  9. Molecules

    Nov 28, 2025 · Molecules are formed during a chemical reaction when bonds are broken and reformed between atoms. This is in contrast to when a covalent compound undergoes a …

  10. Molecules | An Open Access Journal from MDPI

    Molecules is a leading international, peer-reviewed, open access journal of chemistry published semimonthly online by MDPI. The International Society of Nucleosides, Nucleotides & Nucleic …