closed vs isolated?

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Vuong_2F
Posts: 90
Joined: Sat Sep 14, 2019 12:17 am

closed vs isolated?

Postby Vuong_2F » Sun Feb 02, 2020 11:37 pm

what are some examples of closed versus isolated systems??

SVajragiri_1C
Posts: 115
Joined: Thu Jul 11, 2019 12:16 am

Re: closed vs isolated?

Postby SVajragiri_1C » Sun Feb 02, 2020 11:39 pm

An isolated system doesn't exchange mass or energy/heat with the surroundings, like an insulated thermos with the lid screwed on.
A closed system doesn't exchange matter with the surroundings; but it can exchange energy. So for example heating liquids in a pot with the lid closed is a closed system because although no matter is exchanged, energy is still transferred as heat.

Venus_Hagan 2L
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

Re: closed vs isolated?

Postby Venus_Hagan 2L » Sun Feb 02, 2020 11:40 pm

a closed system is when matter can not exchange with the surroundings but energy can, an isolated system is when energy and matter both can not exchange with the surroundings

Nare Nazaryan 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: closed vs isolated?

Postby Nare Nazaryan 1F » Sun Feb 02, 2020 11:42 pm

An isolated system is completely closed off from its surroundings and cannot exchange matter or energy with its surroundings. A closed system is closed off from its surroundings and cannot exchange matter, but can exchange energy with its surroundings. Isolated system: a thermos flask. Closed system: coffee with a lid.

005206171
Posts: 107
Joined: Wed Sep 18, 2019 12:20 am

Re: closed vs isolated?

Postby 005206171 » Mon Feb 03, 2020 12:28 am

A closed beaker is an example of a Closed system. Matter can't leave/enter but the beaker isn't insulated so heat can still be transferred.

The bomb calorimeter is an example of an isolated system. No heat or matter can be exchanged.

805422680
Posts: 103
Joined: Sat Sep 14, 2019 12:16 am

Re: closed vs isolated?

Postby 805422680 » Mon Feb 03, 2020 1:07 am

Closed systems are those that can exchange energy not matter with the surroundings. Isolated systems, on the other hand, can exchange neither with the surroundings. Examples of a closed system include a sealed container (that is capable of transmitting heat etc.), and examples of an isolated system include insulated sealed containers.

Eva Zhao 4I
Posts: 101
Joined: Sun Sep 29, 2019 12:16 am

Re: closed vs isolated?

Postby Eva Zhao 4I » Mon Feb 03, 2020 1:12 pm

An example of a closed system (energy can exchange with surroundings) is a sealed beaker of water, in which the beaker does not insulate. An example of an isolated system (nothing exchanges with surroundings) is the combustion of glucose in a bomb calorimeter. These are the examples provided in class.

Here's a diagram if it helps!
Image

Shail Avasthi 2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

Re: closed vs isolated?

Postby Shail Avasthi 2C » Mon Feb 03, 2020 5:25 pm

Closed systems don't allow the exchange of matter, but they do allow the exchange of energy. An isolated system is perfectly insulated, and does not allow the exchange of matter or energy.


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