Open, closed, or isolated systems

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Arman M 1A
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Open, closed, or isolated systems

Postby Arman M 1A » Thu Jan 31, 2019 8:17 pm

How do you determine if a system is open, closed, or isolated?

Lauren Ho 2E
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Joined: Tue Oct 09, 2018 12:16 am

Re: Open, closed, or isolated systems

Postby Lauren Ho 2E » Thu Jan 31, 2019 8:36 pm

Here is a visual I hope will help!
Attachments
Thermosystems.png
Thermosystems.png (7.26 KiB) Viewed 256 times

Nicole Lee 4E
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Re: Open, closed, or isolated systems

Postby Nicole Lee 4E » Thu Jan 31, 2019 10:53 pm

An open system can exchange matter and energy. A closed system can exchange energy (e.g. heat) but not matter. An isolated system cannot exchange energy or matter.

Jasmine Chow 1F
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Re: Open, closed, or isolated systems

Postby Jasmine Chow 1F » Thu Jan 31, 2019 10:59 pm

An open system, like a cup of water, can exchange matter and energy with the environment. A closed system, like a closed water bottle, can only exchange energy. A isolated system like a sealed thermos can exchange neither.

Chris Freking 2G
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Joined: Fri Sep 28, 2018 12:29 am

Re: Open, closed, or isolated systems

Postby Chris Freking 2G » Fri Feb 01, 2019 2:28 pm

Some examples:
Open - An unsealed flask of liquid; an open soda can
Closed - A sealed flask of liquid, an unopened soda can
Isolated - The universe; A high-quality sealed thermos*; a bomb calorimeter*

* (these are not 100% isolated, but for our reference the heat transfer is approximated to 0)

Anmol_cheema_2F
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Joined: Fri Sep 28, 2018 12:26 am

Re: Open, closed, or isolated systems

Postby Anmol_cheema_2F » Fri Feb 01, 2019 5:15 pm

open system- matter and energy can exchange with surroundings
beaker of water- water can evaporate and breaker does not insulate
closed system- energy can exchange with surroundings
sealed beaker of water does not insulate
isolated system- nothing exchanges with surroundings
combustion of glucose in a bomb calorimeter

Swetha Ampabathina1I
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Re: Open, closed, or isolated systems

Postby Swetha Ampabathina1I » Fri Feb 01, 2019 5:45 pm

An example for an open system would be like an automobile engine or the human body. An example for a closed system would be putting an ice pack on an injury and for an isolated system would be a hot liquid inside a thermos bottle or a sealed vacuum flask.

chrisavalos-2L
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Joined: Fri Sep 28, 2018 12:18 am

Re: Open, closed, or isolated systems

Postby chrisavalos-2L » Sat Feb 02, 2019 4:55 pm

An isolated system is when the system can neither transfer matter or energy into its surroundings, so this would be a system that is completely sealed and insulated from its surroundings.
A closed system is when there can be a transfer of energy however not a transfer of matter, therefore this would a system such as a sealed beaker of water.
An opened system is a system where there can be energy and matter, therefore an example would be an open beaker of solution.

Ruiting Jia 4D
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Joined: Fri Sep 28, 2018 12:27 am

Re: Open, closed, or isolated systems

Postby Ruiting Jia 4D » Sat Feb 02, 2019 6:30 pm

I believe that the question/problem will usually give enough hints as to whether a system is open, closed, or isolated if it was not explicitly stated.

Carine Tamamian 2B
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Joined: Fri Sep 28, 2018 12:23 am

Re: Open, closed, or isolated systems

Postby Carine Tamamian 2B » Sat Feb 02, 2019 6:54 pm

Open system: matter and energy can exchange with surroundings
beaker of water- water can evaporate

Closed system: only energy can exchange with surroundings
Sealed beaker of water

Isolated system: system where nothing can exchange with surroundings

Dong Hyun Lee 4E
Posts: 68
Joined: Fri Sep 28, 2018 12:23 am

Re: Open, closed, or isolated systems

Postby Dong Hyun Lee 4E » Sun Feb 03, 2019 5:33 pm

An open system allows anything to pass into the system while a closed system only allows energy (so like a thermometer). An isolated system is a system is completely isolated from outside energy and matter.


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