Physics
Chemistry

What phase changes require the addition of heat energy?

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2010-06-14 07:10:39
2010-06-14 07:10:39

Phase changes requiring the addition of heat energy are the phase changes from solid to liquid, liquid to gas, and solid to gas.

These phase changes are termed melting (solid to liquid), evaporation (liquid to gas), and sublimation (solid to gas).

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2020-10-01 01:01:49
2020-10-01 01:01:49

All I know is that this person below me that answered is wrong.

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Related Questions


Solid to liquid, liquid to gas, solid to gas, are phase changes that require energy. They are endothermic.


I think melting, condensation and Sublimination.


Condensation or freezing (solidifaction).


Based on chemical properties exothermic phase changes are those that release energy. The exothermic phase changes are gas--> liquid, liquid --> solid, and gas--> solid. Looking at a phase diagram if you are going up the "stairs" the conversions require energy going down the "stairs" energy is released.


Melting (Phase change from solid to liquid), Evaporation (phase change from liquid to vapor), and sublimation (phase change from solid to vapor).


heat energy and intermolecular forces cause phase changes.


Gas to liquid change releases energy.



the system releases energy to its surroundings.


It doesn't change notwithstanding heat energy changes.


Melting and boiling are endothermic changes.


The energy of water can increase if it is heated up, if it is placed under more pressure, if it changes phase, or if it flows faster. In phase change, increase of water's energy happens from: solid phase to liquid phase (melting), from solid phase to vapor phase (sublimation), and from liquid phase to vapor phase (evaporation). Increase in altitude also increases its potential energy.


Heat is what changes. This is when it absorbs thermal energy.


melting and vaporization (evaporation and boiling)


It gains energy from its surroundings; if it can't gain energy there won't be a phase change. The energy involved in a phase change is called latent heat.


phase changes are always physical changes


A phase change, aka a change from liquid to solid, liquid to gas, etc., is a physical change. Whichever phase a material is in is dependent on it's energy (and pressure). By adding just enough energy for a phase change, the individual molecules aren't changed, and are thus not chemically changed.


These are phase changes - All the energy that is added at this time is used to change the phase of the substance.


heat increases kinetic energy i.e. motion of the particles leading to bond breakage which ultimately causes phase change


Endothermic phase changes are melting, vaporization and sublimation.In each of these, energy must be added to the substance to bring about the phase change.vaporization


Phase changes are physical processes.


It can carry twice the energy in terms of volts and amperage with the addition of only one wire to the single phase system


Phase changes are accompanied with optical contrast and therefore the feasibility of phase.



The melting phase changes are Solid~Liquid~Gas and the freezing phase changes are Gas~Liquid~Solid



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