Molecules is a leading international, peer-reviewed, open access journal of chemistry published semimonthly online by MDPI.

The definition of the molecule has evolved as knowledge of the structure of molecules has increased. Earlier definitions were less precise, defining molecules as the smallest particles of …

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 …

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

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 …

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, …

MOLECULE definition: the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. See examples …

5 days ago · Molecules form the basis for every physical and chemical process observed in the world. Understanding how these units are constructed and interact is foundational to chemistry …

Nov 15, 2025 · The chemical bond that binds atoms in molecules together is formed when two atoms share one or more electrons, and achieve a more stable configuration. Molecules can …

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, …