Answer: A sealed, insulated calorimeter is considered as an example of a isolated system.
Step-by-step explanation:
There are three types of system:
An open system is a system which allows free exchange of energy and matter with its surroundings.
A closed system is a system which allows only exchange of energy with its surroundings and not matter.
An isolated system which neither allow exchange of energy nor matter with its surroundings.
Thus in a sealed, insulated calorimeter which do not allow exchange of matter or energy is an example of isolated system.