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Heat of vaporization or enthalpy of vaporization.
It is the additional energy, per unit mass, required after vaporization temperature (boiling point) is reached, to accomplish the change in state, from liquid to gas.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThat depends entirely on what substance you're talking about. Each substance has a different "latent heat of fusion" ... the heat required to change a unit weight from solid to liquid at the same temperature ... and a different "latent heat of vaporization" ... the heat required to change a unit weight from liquid to gas at the same temperature.
One of the many reasons that water is a popular substance for cooling drinks is its large latent heat of fusion ... a single ice cube brings a large amount of 'cooling power' to the drink, because so much heat is required to change it to liquid water.
Wiki User
∙ 7y agoIt is called the latent heat of evaporation or melting.
Christian Worrall
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What type of property is a change of state?
Change of state of a substance is a physical property!
How do energy and changes in energy change the state of matter?
When heating a substance the substance's molecules gain kinetic energy, this leads to chemical bonds being broken and thus a change of state.
Is the specific gravity of substance the same when the substance is in the solid state?
No. Roughly speaking, "specific gravity" is equivalent to density, i.e., mass divided by volume. If a substance changes its state, its volume will change, but its mass won't change - therefore, the density - the result of the division - will also change.
Why does temperature stay the same during a phase change?
The temperature, in Physics, means the measure of Kinetic Energy in a substance. When a substance is either heated or cooled, Kinetic Energy is either being added to taken away from the substance. When the amount of KE in the substance changes, the temperature change. However, when the substance is changing its state, because all the KE change in the substance is being used up to change the state, the temperature will not change. When the substance is changing state, the KE can be measured by calculating the heat of fusion and heat of vaporization.
How can density be altered?
Heat or cool the substance will change it's physical state.
What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the amount of energy that was put in or evolved from the making of that substance from the individual elements.
What is specific latent heat.?
It is the amount of energy required to change the state of 1kg of a substance with no change in temperature.
What is specific heat capacity?
Is the amount of energy that is required to change the temperature of 1kg of a substance by 1 degree Celsius with no state change.
What is a latent heat energy levels?
Latent heat- the amount of heat required by a system/ substance to change phase. It's also heat absorbed or radiated during a change of phase at a constant temperature and pressure.
What causes a substance to change its state of matter?
As thermal energy increases or decreases, a substance will change state. This relates to temperature in that the higher the temperature of something, the greater its thermal energy.
What is the change of a substance from one physical state to another?
change of state
When a substance is undergoing a chance of state the temperature of the substance does not change until the?
change is complete
What type of property is a change of state?
Change of state of a substance is a physical property!
What does a substance change in a physical change?
One possibility is a change in state.
What is the change of a substance from one physical change to another?
change of state
Is the mass of an object defined as the amount of substance in it?
Not exactly, as technically the mass of an object is a measure of its inertia, or resistance to change in state of motion or rest.
A change in state withought forming a substance?
physical change
