Select the correct answer Which statement is true of a chemical change?
0 A
OB
It involves changes in the molecular structure.
It involves changes in phase but not changes in the molecular structure.
It involves dissolving one substance into another.
OC.
D.
It involves a change in the state, or phase of a substance.
О Е.
It involves the process of separating two or more dissolved substances.

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.