A system that can exchange energy but not matter with the surroundings is called:

Question

Question

This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Types of Thermodynamic Systems:

A thermodynamic system can be classified based on its ability to exchange matter and energy with its surroundings:
- Closed System: A system that can exchange energy (heat or work) but not matter with its surroundings.
- Open System: A system that can exchange both energy and matter with its surroundings.
- Isolated System: A system that cannot exchange either energy or matter with its surroundings.
- Isothermal System: A system that maintains a constant temperature during its process.

EXPLANATION:

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A closed system is defined as a system where energy can transfer in or out, but matter cannot. For example, a sealed container where heat can enter or leave but no particles can escape or enter.
An open system, on the other hand, allows both energy and matter to be exchanged with its surroundings. For example, a boiling pot of water where heat and steam (matter) can leave the system.
An isolated system is completely closed off from its surroundings, allowing neither energy nor matter exchange. An example is an ideal thermos bottle.
An isothermal system implies processes occurring at a constant temperature, but this is not necessarily related to the exchange of energy or matter.
Since the question specifies that energy can be exchanged but not matter, the correct answer is Closed System.

Therefore, the correct answer is Option 1: Closed System.