A process results in the formation of a gas as energy is absorbed. Which statement correctly classifies the change that is taking place?

A. The formation of a gas is evidence that a chemical change must have occurred.
B. The change is a physical change whenever the formation of a new substance is not specified.
C. The change is ambiguous, because the evidence can result from either a chemical or a physical change.
D. The absorption of energy can only occur during a chemical change.

Question

A process results in the formation of a gas as energy is absorbed. Which statement correctly classifies the change that is taking place?

 		A.	The formation of a gas is evidence that a chemical change must have occurred.
 		B.	The change is a physical change whenever the formation of a new substance is not specified.
 		C.	The change is ambiguous, because the evidence can result from either a chemical or a physical change.
 		D.	The absorption of energy can only occur during a chemical change.

anonymous · Answer

@Compassionate @zzr0ck3r

eric_d · Answer

It shld be B

abhisar · Answer

yes it should be b, liquid water absorbs heat to transform into water vapor and it is a physical change.

abhisar · Answer

So if formation of new substance is not mentioned then it should be physical change

anonymous · Answer

somehow answer was C :/ @Abhisar @eric_d

abhisar · Answer

aww snap :(

abhisar · Answer

But m not able to figure it out how B is not correct ?

anonymous · Answer

why is b correct?

abhisar · Answer

Because physical change is when no new substance is formed.

abhisar · Answer

or may be i am taking the statement in a wrong way