Define Phase Change

[Melissa Solis 1H]

What does phase change mean specifically? Or is it just a solid changing into a liquid?

[Juliet Carr 1F]

I think a phase change is just a change in the state of matter.
For example:
-When you heat liquid water, it undergoes a phase change from liquid to gas
-When you cool liquid water, it undergoes a phase change from liquid to solid
-etc.

[Aliya 1H]

Phases are solid, liquid, gas. A phase change is any time that a substance changes from one phase to another: solid to liquid, liquid to gas, gas to liquid, liquid to solid, solid to gas, gas to solid. Melting, freezing, boiling, etc. are examples of phase changes.

[Andrew Yoon 3L]

Phase change is when a phase (solid, gas, and liquid) either melting, boiling, or freezing. The process of a phase changing to another phase is a phase change. For example, ice that melts to water is a phase change: it is melting.

[Keon Amirazodi 3H]

There are three phases of matter: solid, liquid, gas. A phase change is when the state of matter changes from one phase to another.

[Ryan_Kien_1L]

A phase change is simply when an object changes from one state to another. It does not necessarily have to be between a solid and a liquid.

[Edwin Liang 1I]

A phase change is when a solid becomes a liquid or gas becoming a liquid or any combination of the three.

[Sai Ramadas 1J]

A phase change is just when it changes from one state of matter (solid, liquid, gas) to another. It doesn't specifically mean any one state to another state.

[Grace_Remphrey_2J]

A phase change occurs when a substance is either heated or cooled and changes from one state to another. For example, when a solid is heated it may change phases to liquid or gas. The reverse can also occur when a change in pressure or temperature causes a change from gas to liquid or solid. Hope this helps!

[Shreyank Kadadi 3K]

A phase change refers to the chemical state a substance is when it's converting from one phase to another. An important thing to note is that when a substance is undergoing a phase change, it is neither the phase that it previously was nor is it the phase that it will eventually become -- it is in an intermediate state.

[josephspindler2H]

A phase change is when a substance changes from one state of matter to another (gas to liquid, solid to liquid, etc.). These occur at the melting point and boiling point, for example. These are the temperatures where such phase changes can occur.

[Luveia Pangilinan 1A]

There are three states: Liquid, gas and solid.
Phase change is when one of the states of matter go from one state to another. In this case liquid to solid, solid to liquid, gas to liquid, liquid to solid, are all phase changes. This can happen either physically or chemically :D

[manisha_joseph_1H]

A phase change describes a change in one state of matter to another. For example, a solid changing to a liquid through fusion or a liquid changing to a vapor through vaporization.

[David Y]

An example would be the melting of solid ice into a liquid water is a phase change

[James_Hankee_1C]

Phase change when a substance goes from one state (solid, liquid, gas) to a different phase. Its the change in molecular bonds to form a new state of this substance.

[Jerry_T]

A phase change is simply when matter changes from one state to another (i.e. solid to liquid aka melting).

[David Jen 1J]

Phase change is when a substance changes from one state of matter to another

[Bryan Le 2K]

A phase change is when the state of matter of an substance changes between solid, liquid, or gas. For example, a liquid changing to a gas is considered a phase change.

[Edison Tham 3D]

A phase change is when a substance goes from one phase (solid, liquid, gas) into another phase when energy is added/removed.

[Ximeng Guo 2K]

In addition, temp doesn't change even when heat is supplied/released during phase change.

[Lauren Strickland 1B]

A phase change is when substance changes from a solid, liquid, or gas to another phase.

[Abraham De Luna]

A phase change is when there is a change of state of matter.

[Aanya Tanti 3C]

Phase change refers to any change of matter- such as solid to liquid or from gas to liquid.

[Diana Aguilar 3H]

Phase change is when a substance goes/changes from one state of matter to another, an example would be when a solid changes to a liquid and so forth.

[Armen_Isayan_2L]

Hello! A phase change is in regards to a substance changing from one state of matter to another, in essence from one phase to another phase as well. It is important to note that when a substance undergoes a phase change, it will take place under different temperate conditions, such as melting and boiling point.

[Isaias Gomez D3A]

Pretty much :) just a change in its state of matter: gas, liquid, or solid.

[Aydin Karatas 1F]

A phase change is a general term for the various processes (sublimation, vaporization, melting/fusion, etc.) where a substance changes its state.

[Rose_Malki_3G]

Phase change means that a substance has changed from one state of matter to another. An example of this would be liquid water becoming water vapor.

[LovepreetSran_3H]

It is the change in the state of matter.

[Zihan Liu 2K]

Phase change means a change from one phase to another. There are three phases for a matter: solid, liquid and gas. Phase change would be an example of changing from solid to gas

[Nicoli Peiris 1B]

A phase change is when a substance changes from liquid, solid, or gas to any other state it initially wasn’t. Example) gas to solid or gas to liquid.

[My-Lan Le 1L]

It is when energy is applied in the form of heat to shift molecules from one phase to another. Some examples include solid to liquid and liquid to gas. A phase change can also happen when energy is released in the form of heat. Some examples of this include a gas to a liquid and a liquid to a solid.

[jessicasilverstein1F]

A phase change is just any time that a substance changes from one phase to another

[Lucy_Balish_3G]

To add on to what everyone else has said, when you look at a phase change graph, each new state is represented as a line with a new slope. So when the slope of the line changes, the phase is changing for that substance.

[Chelsea_Guzman_3C]

A phase change is when a substance changes to another state. Ex. liquid to gas. Certain temperatures cause this change, such as melting or boiling point.

[Maddie Turk Disc 2J]

Hi! So a phase change is just when something changes from one phase (solid, liquid, gas) to another! Hope this helps:)

[reyvalui_3g]

Yes, you are right a solid changing to a liquid is a phase change because the matter is changing forms.

[Gian Boco 2G]

Essentially a change in the state of matter
Solid to Liquid to gas and backwards

[Vanshika Bhushan 1A]

During a phase change, matter changes from one phase to another, either through the addition of energy by heat and the transition to a more energetic state, or from the removal of energy by heat and the transition to a less energetic state. Some phase changes include melting, vaporization, sublimation, condensation and freezing.

[Shana Patel 1C]

A phase change is when the state of matter of an substance changes between solid, liquid, or gas.

[David Y]

It is the factor of one phase being changed to another, like freezing a liquid into a solid (ice)

[Kristina Krivenko 3I]

The official definition of phase change is as follows: a phase change is when matter changes to from one state (solid, liquid, gas, plasma) to another.

So, essentially, a phase change occurs whenever matter goes from one state to another. There is a diagram (http://www.chemistry.wustl.edu/~edudev/LabTutorials/CourseTutorials/bb/Thermochem/images/PhaseChanges.jpg) that I found useful to memorize the names for all phase changes. Most of them are familiar to us, since we often use them in our daily life, but I had to memorize some of them, such as sublimation and deposition, just in case, as I wasn't as familiar with those terms.

[MCalcagnie_ 1D]

A phase change is essentially when a substance changes form from one phase (solid, liquid, gas, plasma) to another. This can also doesn't have to go in only one direction. This can be solid to liquid, liquid to gas, it can even be solid to gas. These are all possible in reverse as well.

[Presley Gao 2C]

A phase change specifically means when a substance transitions from one phase to another. These phases include solid, liquid, gas, plasma, etc. These phase transitions are completely reversible and do not change the component of the substance - just its state.

[Ansh Patel 2I]

Hi! Phase change simply means a change in the state of matter of a substance, such as liquid water being heated and turned into a gas.

[Jared Limqueco 3E]

Phase change is a change in state, like from liquid state to solid state.

[Annie Liang 3D]

A phase change is a physical change (not a chemical change) that changes the state of matter. A change from a solid to a liquid is a phase change involving the overcoming of intermolecular forces.

[Joshua Chung 2D]

A phase change is whenever a substance changes its state of matter (solid, liquid, or gas).

[Sophia Kalanski 1A]

a phase change is just when a substance, like water, changes its state of matter and we try to find how much heat must be put in or taken out to allow that chnage to occur.

[rita_debbaneh2G]

A phase change is when matter transitions from one state to another. There are three different phases to transition between: solid, liquid, and gas. Melting is when the solid transitions to the liquid and evaporation is when the liquid transitions to the gas. Alternatively, condensation is when the gas transitions to a liquid and freezing is when liquid transitions to a solid. Lastly, sublimation is when the solid shifts immediately to a gas and deposition is when gas immediately shifts to a solid (as opposed to condensing into a liquid and so forth).

[Thomas Gimeno]

A phase change is when something changes from one phase to another. This can be something like melting where something goes from solid to liquid but it could also be something like deposition where a gas changes to a solid.

[RyanKopeikin_2I]

Phase change is when something transforms into another form. For example, a phase change occurs when liquid water becomes water vapor (gas).

[Kimiya Aframian IB]

What does phase change mean specifically? Or is it just a solid changing into a liquid?

Hi! A phase change is a change in the state of matter, meaning the transition between a l to a g, s to l, g to s, etc. While phase changes don't necessarily have changes in temperature, they do have changes in input/output energy. Hope this helps!

[Hasan Mirza 3F]

Remember the 3 phases are: gas, liquid, solid.
When a substance in any one phase changes to any other phase a phase change occurs.

[gabbi_r2C]

a phase change is a change between solids, liquids, and gases; a solid-->gas (sublimation), gas-->liquid (condensation), etc. its a change in potential energy only, not temperature

[Jeremy Wei 2C]

Hi! Phase change is essentially the change between the phases of solid, liquid, and gas. Hope this helps!

[Carly_Lipschitz_3H]

Phase changes occur whenever a substance changes phases. The phases consist of solid, liquid, and gas. A phase change occurs whenever a substance undergoes a change into another phase. Melting, freezing, vaporization, and sublimation are some examples.

[Ziyan Peng 3A]

A phase change is when the state of the matter (solid/liquid/gas) is changed. For example it could be ice melting, which is from solid to liquid.

[Charisma Arreola 2F]

A phase change is when the substance either releases or takes in heat to go between a solid, liquid, or gas.

[Vivian_Le_1L]

A phase change is when a substance changes from one state of matter to another. i.e. solid -> liquid (melting), liquid -> gas (vaporization), gas -> liquid (condensation), liquid -> solid (freezing), solid -> gas (sublimation), gas ->solid (deposition).

[Mingzi Yang 1E]

Phase change occurs when a substance of one form changes to another form. For example, liquid water becomes a solid (ice).

[Gian Boco 2G]

A change in state of matter is how I think about it. So changes between solids, liquids, and gases.

[Neel Sharma 3F]

Phase changes include solid to liquid, liquid to gas, and solid to gas. The reverse of all of these is also phase changes. A heating curve can show how where delta H of phase changes works with specific heat capacity. Hope this helps!

[Joel Meza 3I]

A phase change is a change in the state of matter where the different states are solid, liquid and gas. So a phase change is a change from one of the states I mentioned to another state.

[chinmayeec 2H]

The phases are solid, liquid, and gas. The phase changes are any phase changing into another: for example, solid to gas is sublimation. There are different enthalpies for each phase change such as the enthalpy of vaporization or the enthalpy of fusion.

[Dane_Beasley_1E]

A phase change is when one state of matter changes into another state of matter. For example, when an ice cube melts into water that would be a phase change from solid to liquid.

[Jose Miguel Conste 3H]

phase changes are going from solid to liquid, liquid to gas, gas to liquid, so on and so forth.

[Moura Girgis 1F]

a phase change is any change between the states of matter. This includes solid to liquid, liquid to gas, solid to gas, or vice versa.

[Isabella Cortes 2H]

phase changes are when a substance changes its state of matter! for example, a substance going from solid to liquid

[rhettfarmer-3H]

A phase change just refers to a change in state matter whether that be solid to gas or solid to liquid or gas to liquid or liquid to gas. Any of these and the rest are changes of one state to another. Hence, it allows us to see when the particle changes different states.

[Lung Sheng Liang 3J]

Phase change is when a substance changes the state of matter they are in, ex: solid to liquid, liquid to gas.

[Britney Tran IJ]

phase changes= when something changes state of matter

[Naomi Hernandez-Ramirez 1J]

Phase change means when a substance changes its state of matter. For instance water going from liquid to solid than gas, each step is a phase change.

[Sara Sandri 2B]

A phase change is usually going from one state of matter to another. It's important to keep in mind that temperature does not change during a phase change. I recommend looking at the graph of phase changes for water since that helped me understand what exactly was going on.

[Sam_Marasigan_3D]

Phase change is basically when substances (solid,liquid,gas) change into a different state. The substance is either melting (solid to liquid) or vaporizing (liquid to gas). Phase changes occur in a constant temperature.

[alebenavides]

phase change is when it goes from one state to another (melting, freezing, etc)

[Gabriel Nitro 1E]

Hi,

A phase change is defined as any transition from one of three states of matter covered in the course (solid, liquid, gas).

For instance, a block of ice (solid) melting in water (liquid) is a phase change. Water vapor (gas) condensing into water (liquid) is also a phase change.

Hope this helps! :)

[Lindsey Walter 3E]

A phase change is any time a substance changes its state of matter. This would mean a solid, liquid, or gas changing to any other state that it is not currently in.

[Amy Jordan 2A]

Hi, a phase change is a change in the state of matter, and its chemical composition isn't changed. A phase change could be a solid changing to liquid, a liquid changing to gas, etc. Hope this helps!