Answer:
When a system is closed, there is no energy exchange, which means that thermal energy does not move into the atmosphere. As a result, because thermal energy is not transported to the environment, we can conclude that a sealed calorimeter is a closed system.
Step-by-step explanation:
In a nutshell, a calorimeter measures the heat produced by a fuel sample when it is burned at a constant temperature to determine the fuel sample's thermal energy. When a system is open, energy is exchanged between the system and its surroundings. When a system is closed, there is no energy exchange, which means that thermal energy does not move into the atmosphere. As a result, because thermal energy is not transported to the environment, we can conclude that a sealed calorimeter is a closed system.