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<p>In <a href="page.php?w=thermodynamics">thermodynamics</a>, a closed system can exchange energy (as <a href="page.php?w=heat">heat</a> or <a href="page.php?w=mechanical_work">work</a>) but not <a href="page.php?w=matter">matter</a>, with its surroundings.An <a href="page.php?w=isolated_system">isolated system</a> cannot exchange any heat, work, or matter with the surroundings, while an <a href="page.php?w=Thermodynamic_system">open system</a> can exchange energy and matter. (This scheme of definition of terms is not uniformly used, though it is</p><p>
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