To find:
What kind of a system is an ice chest.
Step-by-step explanation:
An open system is a system in which the exchange of both energy and matter, with the surroundings takes place.
A closed sytem is a system in which there will be an exchange of energy with the surrounding, but the matter will not be exchanged.
An isolated system is where there will be no exchange of energy or matter between the system and the surrounding.
An ice chest is designed to keep the substance in the chest cold. That is no heat or matter will be exchanged between the ice chest and its surrounding. Thus, it is an isolated system.
Final answer:
The ice chest is an isolated system.