melting

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jonathan chi 1J
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melting

Postby jonathan chi 1J » Thu Jan 20, 2022 5:29 pm

Is melting endothermic or exothermic?

Alan Nguyen 2I
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Re: melting

Postby Alan Nguyen 2I » Thu Jan 20, 2022 5:32 pm

Melting would me an endothermic process. Heat energy would be absorbed during melting to break intermolecular forces between the water molecules. The reaction needs to take in heat to proceed, making it endothermic. Hope this helps!

Achyutha Kodavatikanti_3H
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Re: melting

Postby Achyutha Kodavatikanti_3H » Thu Jan 20, 2022 7:42 pm

Melting is endothermic as breaking hydrogen bonds requires energy. solid --> liquid means hydrogen bonds are broken

105605391
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Re: melting

Postby 105605391 » Thu Jan 20, 2022 7:54 pm

Melting is an endothermic process because heat must be added to the system in order for the phase change to occur. This also implies that freezing and condensation are exothermic processes. Hope this helps!

Amy Wong 2F
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Re: melting

Postby Amy Wong 2F » Fri Jan 21, 2022 9:06 am

Melting is endothermic because energy is required to break the bonds of a solid to change into a liquid.
Also, if you think about an ice cube melting, you need to apply heat to melt the ice cube. If you take away heat, the ice stays frozen.

Neha Mukund
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Re: melting

Postby Neha Mukund » Fri Jan 21, 2022 1:30 pm

Melting is endothermic because heat is drawn in from the surroundings (in order to melt, an input of energy is needed to break the bonds).

Gianna Greco 1G
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Re: melting

Postby Gianna Greco 1G » Fri Jan 21, 2022 1:37 pm

Hi! Melting is endothermic because energy in the form of heat is required in order for it to occur.

305670352
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Re: melting

Postby 305670352 » Fri Jan 21, 2022 2:42 pm

endothermic as it requires heat energy to occur.

Elaine Steinberg 3H
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Re: melting

Postby Elaine Steinberg 3H » Fri Jan 21, 2022 6:55 pm

Hi! Though you're not completely breaking intermolecular bonds (like the transition from liquid-->gas would), they are being weakened so that the molecules can move around more freely. This requires an input of energy so therefore it would be an endothermic process.

Milan Vognarek 1A
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Re: melting

Postby Milan Vognarek 1A » Fri Jan 21, 2022 11:26 pm

Melting is an endothermic process since heat is absorbed in order to break the bonds holding the atoms or molecules together.

Aaron Kim 1J
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Re: melting

Postby Aaron Kim 1J » Fri Jan 21, 2022 11:37 pm

Melting is an endothermic process since heat is absorbed in the process. This heat energy is used in breaking bonds and is responsible for the phase change.

Ashley Hiti 1K
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Re: melting

Postby Ashley Hiti 1K » Fri Jan 21, 2022 11:39 pm

Melting is endothermic because heat is absorbed. One mnemonic that helps me is EN sounds like IN so heat goes INTO the system IN ENdothermic reactions and EXO sounds like EXIT so heat EXITS the system in EXOthermic reactions.

Terrence Chi
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Re: melting

Postby Terrence Chi » Fri Jan 21, 2022 11:54 pm

Hi, melting is endothermic because the ice consumes energy (heat), which allows a transition to occur. The energy is released when the bonds form to make carbon dioxide and water. Hope this helps!

Sidharth Paparaju 3B
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Re: melting

Postby Sidharth Paparaju 3B » Sat Jan 22, 2022 12:09 am

Melting is endothermic since its converting a solid to a liquid phase, or a low energy to high energy state (the average kinetic energy of molecules is higher in liquid state versus solid).

Diana Avalos
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Re: melting

Postby Diana Avalos » Sat Jan 22, 2022 10:42 pm

Melting(also known as fusion) is an endothermic phase change as energy(heat) is required for a solid to become a liquid!

505706331
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Re: melting

Postby 505706331 » Sat Jan 22, 2022 11:45 pm

melting would be considered an endothermic reaction because heat is required for a solid to melt into a liquid.

Evan L 2B
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Re: melting

Postby Evan L 2B » Sat Jan 22, 2022 11:50 pm

Melting is an endothermic process because energy is required to heat up a substance to its melting point, then more energy is required to break the intermolecular forces of the solid.

205705413
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Re: melting

Postby 205705413 » Sat Jan 22, 2022 11:51 pm

melting is an endothermic process.

Daniel Tabibian 3K
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Re: melting

Postby Daniel Tabibian 3K » Sun Jan 23, 2022 1:05 am

Melting is endothermic because it takes in energy in order to break down hydrogen bonds.

Shawn Suen
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Re: melting

Postby Shawn Suen » Sun Jan 23, 2022 3:46 am

Melting is endothermic

Amy Huynh 1B
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Re: melting

Postby Amy Huynh 1B » Sun Jan 23, 2022 7:23 am

Melting would be endothermic because heat needs to be added so that the bonds can break and enable the compound to undergo melting.

Ivy Vo Dis 1C
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Re: melting

Postby Ivy Vo Dis 1C » Sun Jan 23, 2022 10:48 am

Melting is an endothermic process. This is because the ice will absorb heat energy in order to break the hydrogen bonds in the ice. By doing so, the solid ice will turn into a liquid water.

Joellen 1B
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Re: melting

Postby Joellen 1B » Sun Jan 23, 2022 12:55 pm

Melting is endothermic because it absorbs heat in order to change from a solid to a liquid. Take ice for example. It goes from solid to liquid when it absorbs heat.

Chelsea Tran 3H
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Re: melting

Postby Chelsea Tran 3H » Sun Jan 23, 2022 1:28 pm

Melting is an endothermic reaction since it requires an input of heat energy from surroundings to break the intermolecular forces holding the molecules together as a solid.

Brandon Yu
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Re: melting

Postby Brandon Yu » Sun Jan 23, 2022 1:28 pm

Endothermic because energy must be put in to melt something

Sophie Cresitello 1B
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Re: melting

Postby Sophie Cresitello 1B » Sun Jan 23, 2022 2:09 pm

Melting is an endothermic process. Going from a solid to a liquid requires breaking hydrogen bonds, and breaking hydrogen bonds requires energy. So during melting, energy must be absorbed and there for the process is endothermic.

Bela Patel 2B
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Re: melting

Postby Bela Patel 2B » Sun Jan 23, 2022 2:43 pm

Melting is endothermic because heat is absorbed during the melting process to break apart the forces between the hydrogen bonds. Since it requires heat and absorbs it, it is constituted as an endothermic reaction.

taline krumian 1L
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Re: melting

Postby taline krumian 1L » Sun Jan 23, 2022 6:51 pm

When a substance melts, it absorbs energy from its surroundings. Therefore, the reaction is endothermic.

Jelix Tsan 2H
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Re: melting

Postby Jelix Tsan 2H » Sun Jan 23, 2022 6:52 pm

melting is endothermic because it requires an input of heat to change states

Samantha Quevedo 2L
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Re: melting

Postby Samantha Quevedo 2L » Sun Jan 23, 2022 10:55 pm

Melting is endothermic because an input of energy is required to break bonds.

Om Patel
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Re: melting

Postby Om Patel » Sun Jan 23, 2022 11:22 pm

meling is endothermic because it absorbs heat when the process occurs

Ashrita Singh 2F
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Re: melting

Postby Ashrita Singh 2F » Sun Jan 23, 2022 11:25 pm

Melting is endothermic because heat is absorbed in the reaction.

Sabira Mohammed 3I
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Re: melting

Postby Sabira Mohammed 3I » Tue Jan 25, 2022 10:12 am

Melting is endothermic because energy/heat needs to be absorbed in order to break the intermolecular forces between molecules

Sammy Liu
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Re: melting

Postby Sammy Liu » Tue Jan 25, 2022 11:05 am

Melting would be an endothermic reaction because it requires a continuous input of heat to change phases.

Hope this helps!

Isabelle Kim 3E
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Re: melting

Postby Isabelle Kim 3E » Tue Jan 25, 2022 11:38 am

Melting is an endothermic reaction because it requires heat from its direct surroundings in the process of breaking down the chemical bonds that made up the initial solid. Hence, the overall change in enthalpy is a positive one.

Martha Avila 1I
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Re: melting

Postby Martha Avila 1I » Tue Jan 25, 2022 3:25 pm

Hello! Melting is an endothermic process because in order for the phase change to occur heat is required. This heat will break down the solid turning it into a liquid. Hope this helps!

Caitlyn Lo 2F
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Re: melting

Postby Caitlyn Lo 2F » Tue Jan 25, 2022 4:02 pm

Melting is an endothermic process because energy is needed to break bonds

Rebecca Preusch 2C
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Re: melting

Postby Rebecca Preusch 2C » Tue Jan 25, 2022 4:26 pm

endothermic because heat must be added to melt something

SerenaSabedra
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Re: melting

Postby SerenaSabedra » Wed Jan 26, 2022 4:59 pm

Solids melting to liquids is an endothermic process. In order to break the bonds in a solid substance, energy in the form of heat must be absorbed. When heat is absorbed in a reaction, it is endothermic.

Sasha Gladkikh 2A
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Re: melting

Postby Sasha Gladkikh 2A » Wed Jan 26, 2022 5:42 pm

Hi,

I have attached the phase change diagram as reference:
Image

In order to determine if a phase change is endothermic or exothermic, I simply follow this trick:
• If the phase change occurs from left to right along the diagram (e.g., from solid to liquid), the phase change is endothermic.
• Conversely, if the phase change occurs from right to left along the diagram (e.g., liquid to solid), the phase change is exothermic.
*The x-axis represents heat added into the system; so, going toward the right of the diagram indicates an addition of heat (endothermic) and going toward the left of the diagram indicates a release of heat (exothermic).

Hope this helps!

Talia Tam 3L
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Re: melting

Postby Talia Tam 3L » Wed Jan 26, 2022 10:00 pm

Melting is endothermic because it requires energy/heat.

JasmineReyes-2K
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Re: melting

Postby JasmineReyes-2K » Wed Jan 26, 2022 11:55 pm

Hi!,

Melting is actually an endothermic process since it needs heat

Aryan Gajjar 3D
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Re: melting

Postby Aryan Gajjar 3D » Thu Jan 27, 2022 4:02 pm

The process is endothermic since the material is melting, hence the energy change will be positive. Energy is used only to change the phase of a substance during melting; it is not used to change the temperature of a substance.

ThomasL1L
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Re: melting

Postby ThomasL1L » Thu Jan 27, 2022 4:19 pm

Melting would be an endothermic process since heat needs to be added into the system in order for bonds to be broken.

RCortez_1A
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Re: melting

Postby RCortez_1A » Sat Jan 29, 2022 10:33 pm

Melting is endothermic since it requires heat.

Yewon Jang 3K
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Re: melting

Postby Yewon Jang 3K » Sun Jan 30, 2022 4:20 pm

Melting is an endothermic process because it requires energy for this process to occur. Without heat added to the reaction, nothing would happen. When you want to melt solids into liquids you have to add heat because it wouldn't just melt on its own.

Isha Tripathi 2F
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Re: melting

Postby Isha Tripathi 2F » Sun Jan 30, 2022 5:50 pm

Since melting requires heat to absorbed it would be endothermic.

Genelle Marcelino-Searles 2G
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Re: melting

Postby Genelle Marcelino-Searles 2G » Sun Jan 30, 2022 5:53 pm

Melting would be endothermic, as it requires heat in order to proceed.

Brenda Tran 3C
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Re: melting

Postby Brenda Tran 3C » Sun Jan 30, 2022 5:54 pm

Melting is an endothermic because not only are bonds being broken, but melting required absorption of heat. For example, an ice cube melting occurs because heat is being absorbed. This means that energy is being taken into the system, so it is endothermic.

Desiree Eshraghi 3A
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Re: melting

Postby Desiree Eshraghi 3A » Sun Jan 30, 2022 5:55 pm

Heat is needed to melt something - therefore endothermic!

KyLee 1H
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Re: melting

Postby KyLee 1H » Sun Jan 30, 2022 6:40 pm

Melting is endothermic since it requires energy. Think about - > ice melts when it gets warmer. Therefore, change H is positive. Hope this helps.

Michael 1G
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Re: melting

Postby Michael 1G » Sun Jan 30, 2022 9:24 pm

Since ice is experiencing a phase change from solid to liquid, heat is required to be absorbed by the ice. Anytime heat is absorbed, the process is endothermic.

Mia Orr 3B
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Re: melting

Postby Mia Orr 3B » Sun Jan 30, 2022 9:37 pm

Melting is endothermic because energy is required in order for it to occur. Hope this helps!

Lauren Wasef 3C
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Re: melting

Postby Lauren Wasef 3C » Sun Jan 30, 2022 9:41 pm

Since heat is required to melt something, then it is endothermic! The solid takes up the heat in order for it to melt and therefore makes the surroundings cool.

305723807
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Re: melting

Postby 305723807 » Sun Jan 30, 2022 9:44 pm

melting is endothermic

Polo Morales 3C
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Re: melting

Postby Polo Morales 3C » Sun Jan 30, 2022 10:13 pm

Melting is an endothermic process. Remember that energy is required to break the intermolecular attractions of liquid molecules. Therefore, the liquid is taking up energy from its environment as it becomes a gas. Hope this helps!

Polo Morales 3C
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Re: melting

Postby Polo Morales 3C » Sun Jan 30, 2022 10:13 pm

Melting is an endothermic process. Remember that energy is required to break the intermolecular attractions of liquid molecules. Therefore, the liquid is taking up energy from its environment as it becomes a gas. Hope this helps!

dahlia Faruque
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Re: melting

Postby dahlia Faruque » Sun Jan 30, 2022 10:15 pm

melting is an endothermic reaction because it takes energy from its surroundings

105778693
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Re: melting

Postby 105778693 » Sun Jan 30, 2022 10:36 pm

endothermic reaction since it requires a continuous input of heat to change phases

Jonathan Shyu 3L
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Re: melting

Postby Jonathan Shyu 3L » Sun Jan 30, 2022 10:51 pm

Melting is endothermic because it takes heat to melt. With water, going from a solid (ice) to a liquid (normal water) requires heat, thus a positive delta h and an endothermic reaction.

Abu Zhang 2D
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Re: melting

Postby Abu Zhang 2D » Sun Jan 30, 2022 11:05 pm

As far as I know, melting is an endothermic process as phase change from solid to liquid requires energy to proceed. While it's melting, the temperature is not changing. Once melting is complete, the temperature will continue to increase.

Samantha Toscano 2C
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Re: melting

Postby Samantha Toscano 2C » Sun Jan 30, 2022 11:08 pm

The process of melting would be an endothermic process since heat is required to melt.

ajguerrero
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Re: melting

Postby ajguerrero » Sun Jan 30, 2022 11:09 pm

melting would require heat which would mean that the reaction is endothermic

Cynthia_L_2C
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Re: melting

Postby Cynthia_L_2C » Sun Jan 30, 2022 11:22 pm

From my understanding, melting is an endothermic process because it requires heat for the phase changes.

Daniela G 2C
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Re: melting

Postby Daniela G 2C » Sun Jan 30, 2022 11:41 pm

Melting is endothermic. The reaction requires heat to transition from ice to water.

Nyah Zhang 1E
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Re: melting

Postby Nyah Zhang 1E » Mon Jan 31, 2022 10:32 am

Melting is an endothermic reaction. Heat needs to be absorbed in order for have a phase change from solid to liquid.

Warren Jolicoeur 1B
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Re: melting

Postby Warren Jolicoeur 1B » Mon Jan 31, 2022 11:22 am

Melting is endothermic. It is absorbing heat

rachelsjordan 1K
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Re: melting

Postby rachelsjordan 1K » Mon Jan 31, 2022 11:25 am

melting is endothermic because the surroundings get colder

Amy Jordan 2A
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Re: melting

Postby Amy Jordan 2A » Mon Jan 31, 2022 1:58 pm

Hi, melting is an endothermic because heat is drawn in from the surroundings.

Jordyn Lee 1J
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Re: melting

Postby Jordyn Lee 1J » Mon Jan 31, 2022 2:10 pm

Melting is endothermic because heat is being absorbed to change the solid to a liquid.

Anjali Botcha 3B
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Re: melting

Postby Anjali Botcha 3B » Wed Mar 09, 2022 12:11 am

Melting is endothermic because energy is added to break bonds to go from a solid to a liquid.

Nicola Higgins 14B
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Re: melting

Postby Nicola Higgins 14B » Wed Mar 09, 2022 3:39 pm

Melting is endothermic. To decide whether something is exothermic or endothermic, think "does it need heat to occur?" In this case, we know that a solid cannot melt without energy in the form of heat. On the contrary, a process such as freezing does NOT need heat to occur and is therefore exothermic.

Nathan Morgan 2C
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Re: melting

Postby Nathan Morgan 2C » Wed Mar 09, 2022 9:29 pm

Melting would be an endothermic reaction because when something melts it is absorbing energy which is what allows for a phase change to happen.

andreagutierrez 3K
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Re: melting

Postby andreagutierrez 3K » Wed Mar 09, 2022 11:14 pm

Yes melting is endothermic.

maya 3f
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Re: melting

Postby maya 3f » Wed Mar 09, 2022 11:18 pm

Melting is endothermic as heat must be added to the system in order for it to actually melt.

Justin An 2L
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Re: melting

Postby Justin An 2L » Thu Mar 10, 2022 2:19 am

Melting is an endothermic reaction because heat is being absorbed, therefore the change in enthalpy is positive

Guadalupe_3B
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Re: melting

Postby Guadalupe_3B » Fri Mar 11, 2022 11:54 pm

Melting is an endothermic reaction because the ice absorbs heat/energy, which causes a change to occur.

Guadalupe_3B
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Re: melting

Postby Guadalupe_3B » Fri Mar 11, 2022 11:54 pm

Melting is an endothermic reaction because the ice absorbs heat/energy, which causes a change to occur.

205819952
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Re: melting

Postby 205819952 » Sat Mar 12, 2022 12:50 am

Melting is endothermic

Jack Van Ryan 1A
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Re: melting

Postby Jack Van Ryan 1A » Sat Mar 12, 2022 1:04 am

Yes, melting would be considered an endothermic process.

Thank you!

705676154
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Re: melting

Postby 705676154 » Sat Mar 12, 2022 3:54 am

jonathan chi 1J wrote:Is melting endothermic or exothermic?

it requires heat, so endothermic.

Ellen Brock 2I
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Re: melting

Postby Ellen Brock 2I » Sun Mar 13, 2022 12:32 pm

Endothermic! The solid is breaking down bonds so that it can become a liquid which means it needs to absorb heat, hence endothermic!

Kristen Bansil 1G
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Re: melting

Postby Kristen Bansil 1G » Sun Mar 13, 2022 9:06 pm

Melting is an endothermic process because it is breaking down bonds which requires it to absorb heat :)

Kristen Bansil 1G
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Re: melting

Postby Kristen Bansil 1G » Sun Mar 13, 2022 9:06 pm

Melting is an endothermic process because it is breaking down bonds which requires it to absorb heat :)

Sophia Manos 1F
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Re: melting

Postby Sophia Manos 1F » Sun Mar 13, 2022 9:58 pm

Because melting requires the breaking of bonds and absorption of heat, it is considered endothermic.

Shannon Clark 1F
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Re: melting

Postby Shannon Clark 1F » Sun Mar 13, 2022 11:25 pm

Melting is an endothermic because it requires heat! The substance being heated causes it to melt!

kayleec1004
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Re: melting

Postby kayleec1004 » Sun Mar 13, 2022 11:28 pm

Melting is an endothermic process. Heat energy is absorbed during melting stage in order to break intermolecular forces between the H2O molecules. The reaction needs to absorb heat as energy to proceed forward. breaking bonds = endothermic

Andrew_Ramirez
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Re: melting

Postby Andrew_Ramirez » Sun Mar 13, 2022 11:39 pm

Melting is an endothermic reaction because it is caused by an increase of heat in the system as well as an increase in entropy.

Aeson Salcedo 3L
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Re: melting

Postby Aeson Salcedo 3L » Mon Mar 14, 2022 2:08 am

Melting is an endothermic reaction because heat is needed for melting to occur.

Amanda Tran 1D
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Re: melting

Postby Amanda Tran 1D » Mon Mar 14, 2022 2:19 am

Endothermic because heat is needed for the melting to occur.

Kimberly_Wu_3H
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Re: melting

Postby Kimberly_Wu_3H » Sun Jan 22, 2023 5:16 pm

Since melting requires heat energy to occur, it is endothermic.

Leily Garcia 1C
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Re: melting

Postby Leily Garcia 1C » Sun Jan 22, 2023 8:38 pm

Melting is an endothermic process because in order for one to turn from a solid to a liquid, there has to be energy absorbed (heat) to make it change from one state to another.

Morganne Malloy 1l
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Re: melting

Postby Morganne Malloy 1l » Wed Jan 25, 2023 12:58 pm

I think of it as anything breaking down is endothermic and anything building back up is exothermic.

Hope_Hayashida_3E
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Re: melting

Postby Hope_Hayashida_3E » Wed Jan 25, 2023 4:07 pm

Melting is endothermic because heat is needed in order for it to occur. Think of ice. In order for it to melt, it has to absorb heat.

Hien Nguyen 2G
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Re: melting

Postby Hien Nguyen 2G » Wed Jan 25, 2023 6:05 pm

melting is endothermic because it requires heat absorption in order to break down the bonds.

Natalie Hurd 1H
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Re: melting

Postby Natalie Hurd 1H » Thu Jan 26, 2023 2:43 pm

Melting is endothermic! It requires heat in order to break bonds in the solid state to form a liquid.

nikita_manyak28
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Re: melting

Postby nikita_manyak28 » Thu Jan 26, 2023 3:52 pm

An endothermic process is one that requires energy while an exothermic process is one that releases energy. Melting is an endothermic process because it requires energy to break the bonds that are holding the molecules together while they are solid.

VictoriaPietrusiew2H
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Re: melting

Postby VictoriaPietrusiew2H » Thu Jan 26, 2023 6:06 pm

Melting is an endothermic process! This is because melting requires the input of energy in order to break the bonds. Exothermic process are processes that release energy when bonds form. So freezing or vaporization would be exothermic!

Frankie Xu 2H
Posts: 31
Joined: Mon Jan 09, 2023 9:18 am

Re: melting

Postby Frankie Xu 2H » Thu Jan 26, 2023 7:24 pm

Melting is an endothermic process as it requires energy to break bonds and the phase change is from a solid to a liquid.

Dominic Pham 3A
Posts: 35
Joined: Mon Jan 09, 2023 9:42 am

Re: melting

Postby Dominic Pham 3A » Fri Jan 27, 2023 1:46 pm

When thinking about endothermic v. exothermic, think of bonds breaking and forming as we've learned in relation to the equilibrium constant shifts due to temperature. When ice is melting, bonds are broken and thus require energy which results in K shifting to the right to favor the creation of products.


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