Chemical composition
Chemical Composition
Chemical composition (/kɛmɪkəl kɒmpəˈzɪʃən/) refers to the arrangement, type, and ratio of atoms in molecules of chemical substances. The chemical composition will vary if the amounts of the constituents are changed.
Etymology
The term "chemical composition" is derived from the fields of chemistry and physics. "Chemical" comes from the Greek word "khēmía" meaning "the art of alloying metals," and "composition" comes from the Latin "componere" meaning "to put together."
Related Terms
- Atom: The smallest unit of a chemical element that retains the properties of that element.
- Molecule: A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
- Chemical Substance: A form of matter having constant chemical composition and characteristic properties.
- Chemical Element: A species of atoms having the same number of protons in their atomic nuclei.
- Chemical Compound: A chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
See Also
External links
- Medical encyclopedia article on Chemical composition
- Wikipedia's article - Chemical composition
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