What is a system? Explain the types of systems.

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(N/A) system is defined as a specific part of the universe that is under observation or investigation,where experiments are conducted.
There are three main types of systems:
$(1)$ Open System: In an open system,there is an exchange of both energy and matter between the system and its surroundings.
Example: Reactants in an open beaker.
$(2)$ Closed System: In a closed system,there is no exchange of matter,but an exchange of energy is possible between the system and its surroundings.
Example: Reactants in a closed vessel made of conducting material like copper or steel.
$(3)$ Isolated System: In an isolated system,there is no exchange of either energy or matter between the system and its surroundings.
Example: Reactants in a thermos flask or any other closed insulated vessel.

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