When a substance changes state ,heat energy is aways involved.it is true or false.?

physical science for 9 gradeWhen a substance changes state ,heat energy is aways involved.it is true or false.?
i agree with bark. from what i understand, energy is needed but not necessarily heat energy.When a substance changes state ,heat energy is aways involved.it is true or false.?
were learning about that to, im pretty sure it is true, but i could be wrong
true





edit: doesn't pressure cause heat though?
No.


A state change can occur via temperature


OR pressure change.

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