Closed Systems

Moderators: Chem_Mod, Chem_Admin

Ryan_K_1K
Posts: 51
Joined: Wed Nov 14, 2018 12:18 am

Closed Systems

Postby Ryan_K_1K » Wed Jan 29, 2020 2:28 pm

What were the ways that a closed system can be changed? Was it only by changing the temperature and/or volume?

Tai Metzger 3K
Posts: 103
Joined: Sat Aug 24, 2019 12:17 am

Re: Closed Systems

Postby Tai Metzger 3K » Wed Jan 29, 2020 2:30 pm

Since closed systems do not allow flow of matter but do allow flow of energy, you are correct that they can be changed via changes in temperature and pressure. I hope this helps!

Hui Qiao Wu 1I
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Closed Systems

Postby Hui Qiao Wu 1I » Wed Jan 29, 2020 3:06 pm

Yes, you are right. For the volume specifically, you are either doing work on the system or the system is doing work on the surrounding.

Katie Kyan 2K
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am
Been upvoted: 1 time

Re: Closed Systems

Postby Katie Kyan 2K » Wed Jan 29, 2020 3:50 pm

A closed system can only be changed by a change to pressure or volume. In a closed system no energy or matter can leave the system.

Caroline Beecher 2H
Posts: 51
Joined: Wed Nov 14, 2018 12:21 am

Re: Closed Systems

Postby Caroline Beecher 2H » Wed Jan 29, 2020 8:48 pm

Yes, a closed system can be changed by changing temperature (heating or cooling), pressure, or volume. For example if you have mercury in a thermometer, outside temperature will cause a change in energy of the system.

Connor Chappell 2B
Posts: 59
Joined: Wed Feb 20, 2019 12:16 am

Re: Closed Systems

Postby Connor Chappell 2B » Wed Jan 29, 2020 8:52 pm

Closed systems can be changed by changing either the temperature, pressure, or volume of the given closed system. No matter can flow in and/or out of a closed system, but energy can still be transfered between the system and its surroundings.

Ruth Glauber 1C
Posts: 100
Joined: Wed Sep 18, 2019 12:20 am

Re: Closed Systems

Postby Ruth Glauber 1C » Thu Jan 30, 2020 9:19 am

I think a closed system can only be changed by a change to pressure or volume.

Ryan_K_1K
Posts: 51
Joined: Wed Nov 14, 2018 12:18 am

Re: Closed Systems

Postby Ryan_K_1K » Sat Feb 08, 2020 11:07 am

Okay! That's what I thought. I know it was a simple question but I wanted to make sure. Thanks!

Nuoya Jiang
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: Closed Systems

Postby Nuoya Jiang » Sat Feb 08, 2020 11:47 am

Probably temperature, volume, and pressure since we can only change the "energy" part of the system.

Madeline Phan 1E
Posts: 103
Joined: Sat Aug 17, 2019 12:18 am

Re: Closed Systems

Postby Madeline Phan 1E » Sat Feb 08, 2020 11:50 am

a closed system has inflows and outflows of energy and that can be affected by temperature, pressure, and volume.

Nicholas_Gladkov_2J
Posts: 125
Joined: Sat Aug 17, 2019 12:17 am

Re: Closed Systems

Postby Nicholas_Gladkov_2J » Sat Feb 08, 2020 12:36 pm

Ryan_K_1K wrote:What were the ways that a closed system can be changed? Was it only by changing the temperature and/or volume?


A closed system can have changes that do not affect the amount of "stuff" that is within it's container.
The volume and pressure and have an effect on the system, so long as the amount of matter is not disturbed, as it is closed.

Jessica Kwek 4F
Posts: 29
Joined: Mon Jan 06, 2020 7:57 am

Re: Closed Systems

Postby Jessica Kwek 4F » Sat Feb 08, 2020 1:42 pm

A closed system can only be changed by temperature, pressure, or volume. In a closed system, neither reactants or products can enter or escape, but the transfer of energy is allowed.

CalvinTNguyen2D
Posts: 102
Joined: Thu Jul 25, 2019 12:16 am

Re: Closed Systems

Postby CalvinTNguyen2D » Sun Feb 09, 2020 4:58 pm

Closed systems will block the transfer of matter in and out of the system, but still permits the transfer of energy inside and outside of the system.

stephaniekim2K
Posts: 79
Joined: Fri Aug 09, 2019 12:16 am

Re: Closed Systems

Postby stephaniekim2K » Sun Feb 09, 2020 7:21 pm

Energy cannot leave in a closed system, so only temperature or pressure can change.


Return to “Heat Capacities, Calorimeters & Calorimetry Calculations”

Who is online

Users browsing this forum: No registered users and 3 guests