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

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 …

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 of atoms and voids.

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

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, representing …

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 understanding them …

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 come in …

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 chemical …

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 physical change, in …

Jul 5, 2024 · Molecules are composed of two or more atoms that are chemically bonded together. These atoms can be of the same element, forming a molecule of an element (e.g., O2, N2), or of different …