0
What is ALWAYS true about the temperature of a substance during a phase change?
Wiki User
∙ 14y ago
Its constant (more-or-less, since energy is used in changing state rather than increasing temperature)
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
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.
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.
Is the kelvin temperature of a substance directly proportional to the total kinetic energy of the particles in the substance?
Yes, temperature and kinetic energy are always equal except when going through a phase change, during which temperature stays the same, potential energy increases, and bonds are made/broken. In the case of gas, kinetic energy is equal to temperature unless condensing or depositing.
What happens to temperature as energy is added to a substance that is changing state?
The temperature remain constant during the phase changing.
What happens to density of a substance during thermal expansion?
Thermal expansion is the tendency of matter to change in volume in response to change in temperature. During thermal expansion, the density of a substance decreases as its volume increases. Volume is the space occupied by a body. So, when a substance expands on heating, it will occupy more space or will have more volume. But its mass does not change because the amount of matter contained in a body cannot change. Therefore, mass divided by increased volume gives a decreased density.
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.
Why does temperature no change during energy phase change?
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.
Does the energy content of a substance change during a phase change?
Yes, but not the temperature.
Does the temperature of a substance change before the change of state is complete?
No. During a phase change the temperature is constant until the phase change is complete.
Does the temperature of a substance changes before the change of state is completed?
No. During a phase change the temperature is constant until the phase change is complete.
What properties do not change when matter changes state?
During phase changes the temperature of a substance does not change.
What During a phase change the temperature of a substance .?
The temperature* remains unchanged. * The heat (energy) content changes.
When the physical state of a substance changes during a phase what happens to the temperature of the system?
The temperature remain constant during a change of phase.
What happen to the temperature of a substance during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
What happens to a substances temperature during a phase change?
stays the same
Does the temperature change while a phase chage is occurring?
No, the temperature does not change during a phase change. It remains constant until all the substance has undergone the phase change.
Which stays the same when a substance switches from liquid to gas?
During the phase change, the temperature stays the same.
