What happens while a material is changing state?

a. Its atomic and molecular motions become less limited.
b. Its internal (thermal) energy stays constant.
c. The amount of heat needed is given by its specific heat.
d. Its temperature is constantly changing.
e. Its temperature stays constant.



Answer :

Answer:

e. Its temperature stays constant.

Explanation:

When a material is changing state (e.g., from solid to liquid or liquid to gas), its temperature stays constant during the phase change. Therefore, the correct answer is:

e. Its temperature stays constant.

This is because the heat energy added to or removed from the material during the phase change is used to break or form intermolecular bonds rather than increasing the kinetic energy of the particles, which would raise the temperature.

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