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strictly speaking in order for matter or energy to be conserved a system must be______. A-open B- closed C-unique D-stationary

Respuesta :

B. Closed because otherwise the energy would "escape"
Manetho

Answer:

B. Closed

Explanation:

In an open system both matter and energy is exchanged with the surroundings. Thus option A is incorrect.  

In a closed system, matter is not transferred but energy is exchanged. Option B is correct.

Isolated system does not allow the exchange of matter or energy.

Options C and D are incorrect as there are no systems in thermodynamics called unique and stationary.  

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