Answer:
The box contains a finite number of chocolates making it a closed system since this number does not change.
After taking the box and opening it to eat some chocolates it becomes an open system that can exchange chocolates with the medium
Explanation:
In thermodynamics an isolated system is a system in which no heat is exchanged with the medium, a closed system is a system where no particular one is exchanged with the surrounding medium.
In this case, the box can exchange heat since the cardboard walls are not insulating, so it is not an insulated system.
The box contains a finite number of chocolates making it a closed system since this number does not change.
After taking the box and opening it to eat some chocolates it becomes an open system that can exchange chocolates with the medium
