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Adding or removing energy in the form of heat causes the phase change. The amount of heat to be added or removed is called latent heat. It changes the state of a substance without changing it's temperature.
There are two types of latent heat. The latent heat of fusion, and the latent heat of vaporization.
The latent heat of fusion must be added to change phase from solid to liquid, and removed to change from liquid to solid. The first change is endothermic and the second change is exothermic.
The latent heat of vaporization must be added to change phase from liquid to vapor, and removed to change from vapor to liquid. Again the first change is endothermic and the second change is exothermic.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agotemperature remains constant
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What always accompanies a phase change?
Heat energy changes.
What phase changes require the subtraction of heat energy?
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).
What are the phase changes processes taking place when a substance is in equilibrium between liquid and gas phase?
Evaporating and condensing
A great amount of water vapor changes phase to become liquid water droplets in the clouds that form a thunderstorm Does this phase change release energy or absorb it?
a great amount of water vaptor change phase to become liquid water droplets in the clouds that form a thunderstorm. does this phase change release or absord energy? how do you know
Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
What phase changes release energy?
Gas to liquid change releases energy.
What phase changes require the addition of energy?
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).
What are the phase changes that release energy?
Condensation
What happens to substance during changes between gas to liquid?
The particles of the substance gain kinetic energy as they absorb heat energy. Eventually there is enough kinetic energy for the particles to escape the liquid phase, forming the gas phase.
Where does the thermal energy go in such endothermic phase changes?
It is converted to bond energy
What is the difference between energy investment phase and energy payoff phase?
hy
What is te rule that describes the relationship between phase changes and temperature?
Increasing the temperature a solid material become a liquid and further a gas.
When Water loses energy when it changes phase from?
Liquid to solid
What always accompanies a phase change?
Heat energy changes.
What is the relationship between phase of matter and energy?
e = m c squared ... they are 2 aspects of the same thing.
What is unique about temperature during phase changes?
It doesn't change notwithstanding heat energy changes.
Why is it the phase relationship between input and output signals of the common collector amplifier is in phase?
no phase shift
