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Types of Systems

Posted: Mon Jan 15, 2018 1:34 pm
by Sophia Bozone 2G
What is the difference between a closed and isolated system?
Thanks!

Re: Types of Systems

Posted: Mon Jan 15, 2018 1:37 pm
by Tim Foster 2A
An isolated system has no interaction with its surroundings whatsoever, while a closed system has a fixed amount of matter, but can exchange energy with its surroundings. A good example of a closed system is something like an ice pack, and a good example of an isolated system is something sealed off by vacuum. Hope that helps!

Re: Types of Systems

Posted: Mon Jan 15, 2018 3:51 pm
by Emily Mei 1B
Also for reference, an open system can exchange both matter and energy with its surroundings (e.g. a car engine).

Re: Types of Systems

Posted: Mon Jan 15, 2018 9:16 pm
by Sarah 2F
An isolated system doesn't let anything in or out like a really good thermos but a closed system allows things of matter to pass such as heat. An example of a closed system is mercury in a thermometer.

Re: Types of Systems

Posted: Mon Jan 15, 2018 9:53 pm
by Kaelie Blanes-Ronda 2L
A closed system is able to interact with its surroundings and exchange energy such as heat. However, an isolated system is completely independent and doesn't interact with its surroundings.

Re: Types of Systems

Posted: Mon Jan 15, 2018 10:13 pm
by AtreyiMitra2L
In a closed system, there is an exchange of energy but not matter. The example in the book given is a refrigerator coil. This is a closed system because the coil cools the refrigerator through the transfer of energy. There is no exchange of the fluid, however, In contrast, in an isolated system, there is no exchange of matter or energy. An example would be a thermus bottle that is very well insulated. It will stay at the temp (because of the insulation) meaning there is no transfer of energy. There is also no transfer of matter as the liquid when its closed stays in the bottle.

Re: Types of Systems

Posted: Tue Jan 16, 2018 11:22 am
by Eli Aminpour 2K
an Isolated system can not exchange heat with its surroundings, but a closed system can. Neither system can exchange matter with its surroundings

Re: Types of Systems

Posted: Tue Jan 16, 2018 12:07 pm
by Tatiana Hage 2E
If the matter cannot be transferred through the boundary but energy can be exchanged with the surroundings, then that is a closed system. For an isolated system, neither energy nor matter can be exchanged with the surroundings.

Re: Types of Systems

Posted: Tue Jan 16, 2018 12:28 pm
by Anna Goldberg 2I
Question 8.1 offers good examples of open, closed, and isolated systems.

Re: Types of Systems

Posted: Tue Jan 16, 2018 7:52 pm
by melissa carey 1f
Is there a type of system which somehow exchanges particles but not heat? Or is this impossible?

Re: Types of Systems

Posted: Tue Jan 16, 2018 8:11 pm
by Patricia Macalalag 2E
^^I don't think so. The textbook only defines open, closed, and isolated systems.