Open System
The system which can exchange both heat and matter with the surrounding is called open system. Hot water in a beaker is an example of this system.
Closed System
The system which can exchange only heat but not matter with the surrounding is called closed system. Hot water in a sealed tube is an example of this system.
Isolated System
The system which can exchange neither energy nor matter with the surrounding is called Isolated system. Hot water in a thermos flask is an example of this system.