Question

select the correct answer. which statement is true of a chemical change? a. it involves changes in the molecular structure. b. it involves changes in phase but not changes in the molecular structure. c. it involves dissolving one substance into another. d. it involves a change in the state, or phase, of a substance. e. it involves the process of separating two or more dissolved substances.

Explanation:

A chemical change results in the formation of new substances with different chemical properties, which means there are changes in the molecular structure. Phase - change, dissolving, and separating dissolved substances are physical changes.

Answer:

A. It involves changes in the molecular structure.