Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Which of the following can bring about a change in the physical state of matter?

When energy is taken out of the system

When energy is added to the system

Physical changes are changes affecting the form of a chemical substanc

1.	Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Which of the following can bring about a change in the physical state of matter?
A.	When energy is taken out of the system
B.	When energy is added to the system
C.	Both A and B
D.	Energy change is not required.
Answer» D. Energy change is not required.

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Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Which of the following can bring about a change in the physical state of matter?

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