+An **isolated system** is a [Thermodynamic System](/wiki/Thermodynamic_System) that remains entirely separate, unable to exchange [Energy](/wiki/Energy) or [Matter](/wiki/Matter) with its environment. Within its self-contained boundaries, both total mass and energy endure unchanged, an idealized state for scientific inquiry.
+## See also
+- [Closed System](/wiki/Closed_System)
+- [Open System](/wiki/Open_System)
+- [Thermodynamics](/wiki/Thermodynamics)
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