substancia
Substance is a term used across science and philosophy to denote something with a definite identity. In chemistry, a substance is a form of matter with a fixed composition and distinct properties. Substances are either pure substances, which have a uniform composition, or mixtures, which contain two or more substances that can be separated by physical means.
Pure substances include elements, comprised of a single type of atom, and compounds, formed from atoms in
In contrast, a mixture is not a pure substance because its composition can vary and its components
In philosophy, substance refers to an underlying entity that exists independently and bears property ascriptions over
The term substancia is used in several languages to translate substance; while the scientific concept remains