Question

Closed systems exchange energy, but do not exchange what​

Answer 1

In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings

Step-by-step explanation:

It doesn't exchange matter

Answer 2

matter

Step-by-step explanation:

"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"