Question

Which statement best describes energy in an open system?

All energy and matter are contained within the system.
Energy and matter flow into and out of the system.
Matter flows into and out of the system; energy does not.
There is no energy in an open system; there is matter.

Answer 1

Answer: Energy and matter flow into and out of the system.

Step-by-step explanation: There are three types of system:

Open System: A system where mater and energy both can pass across the boundary. Example: Tea kept in a cup

Closed system: A system where mater can not be exchanged but energy can be exchanged. Example: Tea kept in a kettle

Isolated System: A system where neither mater nor energy both can be exchanged. Example: Tea kept in a thermos

Answer 2

I think the correct answer would be when energy and matter flow into and out of the system. An open system would be when mass and energy are able to go in and out that system. However, if it is not possible then it is called a closed system. Hope this helps.