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During a phase change, the heat transferred to a substance is used to break intermolecular forces (latent heat), and thus the temperature of the substance does not change. The opposite also occurs: heat is transferred from a substance during a phase change without a decrease in temperature as intermolecular bonds form.
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∙ 12y ago
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What happens to a substances temperature during a phase change?
stays the same
What happens to the energy added during a phase change?
The added energy is used in the phase change to break intermolecular bonds.It is used for the phase change. ~ APEX
What happens to energy added during a phase change?
The added energy is used in the phase change to break intermolecular bonds.It is used for the phase change. ~ APEX
As heat is added to a substance undergoing a phase change. why does the temperature remain?
Basically what it comes down to is the substance that is left behind during the phase change (say the liquid when it is changing to a vapor) has a lower internal energy than it had before the phase change started. To maintain the substance at its original temperature, an equivalent amount of energy must be added to make up for the loss of internal energy due to the phase change. (Conservation of Energy)The energy added in this case is heat, which in turn causes more molecules of the substance to change phases and lowers the internal energy & the process repeats. This is why the temperature remains constant as you add heat to a substance during a phase change. Once the phase change is completed the added heat will eventually cause the temperature to rise in the new phase of the substance. Hope this explanation helps. It's kind of hard to explain without a basic knowledge of thermodynamics.
When water is heated the temp reaches a constant value and forms a plateau on the graph what does the plateau indicate?
It indicates that the temperature does not change during the phase change from liquid to gas until the change is complete. During the phase change, the heat energy added to the water goes into breaking hydrogen bonds between water molecules, so it does not cause an increase in temperature during that time.
Why doesn't the temperature change fast during a phase change?
Basically because there is energy needed for the temperature to rise or become lower, but energy is also needed to change the phase, so instead of the energy being used to change the temperature, it is being used to change the phase, therefore temperature does not change.
Does the energy content of a substance change during a phase change?
Yes, but not the temperature.
What happens to temperature during a phase change?
Temperature is constant during a phase change.
What happens to a substances temperature during a phase change?
stays the same
What During a phase change the temperature of a substance .?
The temperature* remains unchanged. * The heat (energy) content changes.
Sometimes heat energy is added but the temperature stays the same when is this?
During a phase change.
What do you think will happen to the temperature of a substance during a phase change?
Typically, the temperature doesn't change during a phase change.
What happen to the temperature of a substance during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
What happens to the temperature during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
How does the the energy of a system change during a phase change?
energy is either absorbed or released during a phase change
How does the energy of a system change during phase change?
energy is either absorbed or released during a phase change
What is unique about temperature during phase changes?
It doesn't change notwithstanding heat energy changes.
