## Systems

Hailey Johnson
Posts: 31
Joined: Wed Nov 16, 2016 3:04 am

### Systems

I'm having trouble differentiating between closed and isolated systems. Can someone give me some examples of the two?

Isita Tripathi 2E
Posts: 52
Joined: Sat Jul 22, 2017 3:00 am
Been upvoted: 1 time

### Re: Systems

An isolated system is coffee in a sealed thermos because neither energy nor mass (coffee) can leave/enter. A closed system is coffee in a sealed cup, because it can exchange energy in the form of heat with the surroundings, but it still cannot exchange mass.

Samira 2B
Posts: 38
Joined: Fri Sep 29, 2017 7:05 am

### Re: Systems

An open system is one that can exchange matter and energy with its surroundings. A closed system is one that can only exchange energy and an isolated is one that can't exchange either matter or energy.

Danah Albaaj 1I
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

### Re: Systems

A closed system has a fixed amount of matter within it, but it can exchange energy with its surroundings. The coolant in a refrigerator coil is an example of a closed system because the type of matter doesn't change (coolant) and there is an energy exchange (temperature of refrigerator). Isolated systems can exchange neither energy or matter with its surroundings, essentially having no contact with its surroundings. The coffee in a insulated thermos is an example of an isolated system because the type of matter doesn't change (coffee) and there is no energy exchange with the surroundings (coffee stays the same temperature).