Question

what is one sign that indicates a physical change​

Answer 1

Answer:

A - matter changes but no other substance is formed.

Explanation:

A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. Therefore a change of matter is a physical change.

Answer 2

Answer:

B) a substance chamges color when exposed to air

Explanation:

I took the test