Your classmate is having a hard time in understanding the lesson about phase change. Given this scenario, what information about phase change should you emphasize so that he will not get confused about the lesson? *
d. Phase changes occur when sufficient energy is supplied to the system, and also occur when the pressure on the system is changed.
c. Phase change is a type of chemical change that alters the chemical composition of a material.
a. Phase change does not require the presence or absence of heat in a material.
b. The temperatures and pressures under which phase changes happen does not differ.
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Answer:
D is the correct answer.
Explanation:
A phase change is when matter changes to from one state (solid, liquid, gas, plasma) to another. These changes occur when sufficient energy is supplied to the system (or a sufficient amount is lost), and also occur when the pressure on the system is changed.