Thermodynamic System Types: Defining Exchange
Thermodynamics classifies systems based on their interaction with surroundings, specifically concerning the exchange of energy and matter.
System Definitions
- Open System: Exchanges both energy and matter with its surroundings. Example: A boiling pot of water without a lid.
- Closed System: Exchanges energy (like heat or work) but not matter. Example: A sealed container with gas being heated.
- Isolated System: Exchanges neither energy nor matter. This is a theoretical ideal, often approximated by highly insulated systems. Example: An ideal thermos flask.
Identifying the Correct System
The question asks for a system with no exchange of energy or matter.
Based on the definitions:
- Open systems exchange both.
- Closed systems exchange energy but not matter.
- Isolated systems exchange neither energy nor matter.
Therefore, the system described is an isolated system.
