Closed System

[Scot Widjaja Dis 1J]

How can energy be exchanged in a closed system if it is insulated from the external environment (surrounding)?

[Lillian Ma 1I]

A closed system is not necessarily insulated, it just has to be sealed. An isolated system is insulated and cannot exchange energy with the surroundings.

[Fiona Huang 3C]

A closed system just means that matter cannot be transferred in or out, but energy still can. For example, if a beaker is sealed, it is a closed system, but work and heat can still be transferred, so it is exchanging energy with its surroundings.

[Ven Chavez 2K]

A closed system is like a closed plastic bottle. The water will become warm if left out but the water cannot evaporate. An isolated system, however, is insulated and energy won't be transferred to the surroundings.

[Sai Ramadas 1J]

Only an isolated system prevents the exchange of both energy and matter between the surroundings and the system. In a closed system, energy can still be transferred.

[Edison Tham 3D]

I agree with what was said above. Closed systems are only sealed and are not insulated, meaning that energy can still be exchanged with the surroundings. Only matter cannot be exchanged as that characteristic only apply to open systems.

[Karl Yost 1L]

A closed system just means that matter (i.e. "stuff") can't be added or removed. This system, however, isn't insulated like an isolated system is. Therefore, heat can be exchanged between the system and its surroundings.

[Rob Tsai 2F]

I think you are confusing a closed system with an isolated system. Energy can still be transferred in and out of a closed system; matter is the thing that cannot enter or escape. Hope this helps!

[Annie Liang 3D]

A closed system is where energy, not matter, can still be exchanged with the surrounding. This means that the system is not being insulated; rather, a system that is insulated would be an isolated system rather than a closed system.

[Gwirnowski 3B]

Closed systems are not insulated and can therefore exchange energy with its surroundings. What makes it closed is that is cannot exchange matter with its surroundings, and only isolated systems cannot exchange both matter and energy.

[Keshav Patel 14B 2B]

Closed system still can interact with surroundings just in a sealed container. So it’s like a water bottle with the cap, the amount of water cannot increase with rain but some of the water can evaporate because of the sun.

[manisha_joseph_1H]

A closed system does not have to be insulated, but rather sealed from the surroundings. As such, matter can not be exchanged between the system and the surrounds, but energy can. For example, a beaker that is sealed can still be heated or cooled, which signifies a change in energy as the temperature of the system changes.

[Lesly Lopez 3A]

I think a closed system means that matter cannot be transferred in or out, but energy still can. A beaker is sealed, it is a closed system.

[AustinMcBrideDis3L]

Make sure to differentiate between "closed" and "insulated". They both have lids in the beaker example, but "insulated" has the layer of heat protection around it. This insulated systems cannot have molecules go in/out, nor heat. However, "closed" systems still cannot have molecules go in/out. But heat IS able to move in/out.

[Aria Movassaghi 1A]

its sealed but not always insulated

[Jaden Kwon 3C]

A closed system is sealed which means matter can't be transferred between the system and its surroundings but that doesn't mean heat can't be transferred. For example, a coffee cup with a lid on is a closed system because even though no additional matter can get in or out of the cup, the coffee still cools down.

[Aydin Karatas 1F]

If a system is insulated, then no heat transfer can occur. This would be a trait on an isolated system where neither matter nor energy can be exchanged with the environment. A closed system is "isolated" in the sense that no matter can enter or exit the system, but energy can still be transferred. Think of putting the lid on a pot of water, then place the pot on a lite stove. So long as the lid is on, water can't escape and more water can be added. However, the water will start boiling because heat energy from the stove is being transferred in the system (closed system).

[Ansh Patel 2I]

Hi! A closed system doesn't have to be insulated and can still interact with its surroundings, but matter cannot enter/exit the system.

[Jerry_T]

An (ideally) insulated system is an isolated system where neither matter nor energy can be transferred between the system and surroundings while a closed system is one where matter cannot be transferred but energy (heat) can be transferred to/from the surroundings.

[joshtully]

Matter cannot leave a closed system but it does not have to be insulated.

[John_Tran_3J]

Closed means things cannot enter in or out

[Karen Elrayes 1L]

Energy can be exchanged but matter can not

[Christine Ma 3L]

I agree with all the above posters, but I wanted to add that an insulated closed system would essentially be acting like an isolated system, where neither matter nor energy can be exchanged with the surroundings.
A closed system can only exchange energy with its surroundings through heat transfer, so if the system were to be perfectly insulated, the system couldn't exchange any energy at all with its surroundings. Hope this helps!

[Sondia Luong 1C]

A closed system can still exchange energy with its surroundings, but an isolated system does not exchange energy with its surroundings.

[LovepreetSran_3H]

In a closed system energy can transfer in and out but matter cannot.

[Gustavo_Chavez_1K]

It is still exhanging energy with its surroundings and can still move in and out. A closed system is different to an insulated system, in an insulated system energy is not exchanged with its surroundings.

[Britney Tran IJ]

in a closed system energy can transfer in and out but after can't

[Mehreen 3I]

Energy can be transferred but not matter in a closed system. In an insulated system, neither can be transferred.

[Arnav Saud 2C]

I think the way a closed system works is that energy is able to leave/enter the system, but matter cannot.
In an isolated system neither matter nor energy can leave/enter, and in an open system, energy and matter can both leave/enter.

[James_Hankee_1C]

In a closed system, there is no escape from what's inside and the surroundings. There is an exchange of heat from the insulation. The insulation helps to keep heat exchange to a minimum however heat can still escape. In an isolated system, no heat is exchanged.

[Riddhi Mehta 2C]

A closed system just means that no substance can go in and out. However it is not insulated like an isolated system. A closed system still allows transfer of heat and energy. If you want a visual, I suggest to go back to Dr. Lavelle's Lecture #10 as there is a great graphic there showing the differences between an open, closed, and isolated system.

[Javier Perez M 1H]

The main thing with closed systems is that you can't add anything into the inside of the system besides things like heat that can go through the walls.

[Hannah Lechtzin 1K]

In a closed system matter cannot leave, but the system can still be heated/cooled or compressed/expanded. This allows for energy change to occur. For example, if you boil water in a sealed container the water heats up, but cannot leave that container.

[Namratha Gujje]

A closed system is when it is sealed, it does not mean that there cannot be energy transfers. In an isolated system it is both sealed and insulated and there cannot be any energy transfers.

[Scot Widjaja Dis 1J]

Great! Thanks guys.

[Justin Lin 1B]

A closed system and isolated system are different things. Energy can still be transferred through a closed system but not through an isolated system because it is insulated and doesn't allow matter or energy to transfer.

[rita_debbaneh2G]

A closed system is closed to the exchange of matter, but it's not insulated to the point where it can't exchange energy. You're thinking of an isolated system.

[Zach Richardson 2f]

It does not necessarily mean that the energy is constant within the system, just the matter. Energy can be exchanged without the exchange of matter.

[sabrina ghalambor 2J]

a closed system is just that, closed, but heat can still be transferred in and out of the system. it's like a closed tupperware! we can still heat the food using the microwave, but the matter inside is still the same

[Mingzi Yang 1E]

A closed system is when there is no exchange of matter in and out of the system. For example, when a bottle is sealed. Only energy can be exchanged with the surroundings.

[James_Hankee_1C]

Energy can be transferred in and out of a closed system as heat can be exchanged with the surroundings. If a closed system is insulated then there is no exchange with the surroundings.

[Teti Omilana 1G]

An example of a closed system would be a sealed beaker, therefore matter cannot go in and out. But this does not mean its insulated, so heat can still exchange with its surroundings.

[Vivian_Le_1L]

A closed system is not necessarily insulated, but rather sealed. As a result, matter cannot be transferred, but energy can. An example would be an ice back and how the contents inside sealed within, but the heat between body and ice pack are still being transferred between one another.

[kentbui1d]

A closed system can still experience heat transfer, but a isolated system cannot.

[Edgar Velazquez 2K]

I think that it's the isolated system that would be insulated, not the closed system. Professor Lavelle gave the example of a closed test tube during one of the lectures. Since the tube is sealed, no mass can be exchanged, but energy still can be.

[Tammy Shen 2L]

Energy can move in a closed system, but matter cannot. Thus, there can still be transfer of heat to affect what is inside the system.

[Sidharth Paparaju 3B]

Hi! Closed systems don't have to be insulated, so heat can still escape. For example, heat can escape or enter through a plastic bag. So, if you put ice in a plastic bag, it would melt since heat exchange can still happen with the surroundings.

[605499821]

Closed systems are not isolated systems so they can still transfer energy.

[danielle05]

In a closed system, energy can still be exchanged, just not matter. However, in an insulated system, neither energy or matter can be exchanged.

[Arshaun Faraji 2H]

energy can still be exchanged in a closed system because it is only unable to exchange matter. For example, a closed box can still exchange heat with the environment outside the box, but not matter. You are talking about an isolated system, where nothing, including energy, can be transferred.

[Alice Weber 3I]

A closed system is not necessarily insulated. Matter cannot go through but energy can.

[Lesley Kim 1K]

Closed systems are not 100% isolated. There can be an exchange of energy. However, because the system is closed, the contents of the reaction will remain in the closed system.

[Coraly De Leon]

Energy can exchange energy in a close system through heat and transfer whereas an isolated system will not be able to do so at all.