exothermic phase changes

[jonathan chi 1J]

Which phase changes are exothermic?

[Vincent Nguyen 3G]

The exothermic phase changes would be condensation (gas to liquid) and freezing (liquid to solid) since the individual particles in those phase changes are losing/releasing kinetic energy.

[AudreyQian1J]

Hello,
Freezing, condensation, and deposition are exothermic phase changes, because they release energy when forming bonds.

[Achyutha Kodavatikanti_3H]

Just as there are 3 endothermic phase changes, there will be 3 exothermic phase changes (the reverse of the endothermic phases).

gas --> liquid = condensation
liquid --> solid = freezing
gas --> solid = deposition

[oliviahelou]

I believe the answer to your question is the phases of condensation and freezing. Those are the main ones we covered in lecture.

[Harrison Lin 2J]

A good way to think of it is by defining the term, exothermic. When a reaction is exothermic, heat is being released to the surroundings.

Take water for example.

When water is at 100 degrees Celcius, it is a gas. If it loses heat and falls below 100 degrees Celcius, it is a liquid. If it loses hat and falls below 0 degrees Celcius, it will freeze. Therefore, an exothermic reaction (a loss of heat) will result in a phase change of condensation and freezing.

[Terrence Chi]

Hi, freezing (liquid to solid), condensation (gas to liquid), and deposition (gas to solid) are all exothermic phase changes. Hope this helps!

[Sidharth Paparaju 3B]

(s-->l), (l-->g) (s-->g) are endothermic
(g-->l),(l-->s),(g-->s) are exothermic

[kareena_prasad]

Going from a gas to a liquid and then a liquid to a solid are both exothermic reactions. This is because they do not require energy to happen. They need energy taken away in order for this to happen, so energy is released during these processes.

[Dillon Taing 3H]

Exothermic reactions release energy due to the formation of bonds in the processes. The three exothermic phase changes that release energy from the system to surroundings are freezing (liquid to solid), condensation (gas to liquid), and deposition (gas to solid).

[Thailer Phorn 1C]

Condensation, freezing, and deposition are examples of exothermic phase changes.

[Mahli Martinez 2I]

There are three!! There's freezing, which is the transition from liquid to solid, Condensation, which is the transition from gas to liquid, and deposition, which is gas to solid.

[Diana Avalos]

Freezing, deposition, and condensation are examples of exothermic phase changes!

[danielle05]

Freezing (liquid --> solid), condensation (gas --> liquid), and deposition (gas --> solid) are all exothermic reactions. This is because heat is being given off in order to change from one state to another.

[Edwin Montalvo 1G]

When a compound/substance is going from a higher energy state to a lower energy state, then the reaction is said to be exothermic. This can be seen in these three phase change examples where energy is released when going from one phase to another:

- gas to liquid (condensation)
- liquid to solid (freezing)
- gas to solid (deposition)

[Joellen 1B]

Exothermic phase changes are those that release heat in the process, so things such as freezing, condensation, or deposition.

[Melody Khoshneviszadeh 3C]

exothermic indicates that a release in energy is involved in the reaction as bonds form and reach a stable state that allows them to lower in energy. when it comes to phase change, reactions that go from gas to liquid, liquid to solid are exothermic reactions as the decrease in heat causes the substance to have its modules to be closer, lower energy.

[Misha_Khan_2H]

The three exothermic phase changes are condensation (gas to liquid), freezing (liquid to solid) and deposition (gas to solid).

[Isabelle Kim 3E]

Exothermic reactions are when the overall heat is released during the process, which makes the measured change in enthalpy to be negative. Relating this to phase transitions, exothermic reactions would be seen in the following:
1) Freezing (liquid to solid)
2) Condensation (gas to liquid)
3) Deposition (gas to solid)
These phase transitions display a drop in temperature, hence the enthalpy decreases.

[Mia Orr 3B]

The phase changes that are exothermic are freezing, condensation, and deposition. Hope this helps!

[Mahika Saoji 3K]

Hi! Freezing, condensation, and deposition are all exothermic phase changes because you are releasing energy when forming bonds! Exo- outside. I hope that helped!

[HemangD 3K]

vapor --> liquid, liquid --> solid, and vapor --> solid are phase changes that release energy. Hence, they are exothermic.

[Trisha Badjatia 2L]

Exothermic phase changes including freezing, condensation, and deposition. These all involve a substance creating stronger bonds with the atoms losing kinetic energy, thus giving off heat to the surroundings and making the process exothermic. Hope that helps!

[Anubhav_Chandla1G]

Since exothermic phase changes all take place through a release in energy, freezing, condensation, and deposition are all exothermic phase changes.

[Adithi Ayyala 2G]

Hi! So for exothermic phase changes, looking for circumstances in which molecules move closer together and bonds form, thus releasing energy, is quite helpful. More specifically though, freezing, condensation, and deposition are the three exothermic phase changes we have studied so far.

[Harshitha_Pandian_3F]

Condensation, freezing, and deposition are all exothermic phase changes as energy is exiting the system. You are going from a phase where the particles are moving more to a phase where particles are moving less.