Which statement best describes the difference between a physical change and a chemical change? a. a chemical change results in a new element being formed, and a physical change results in a new compound being formed. b. a physical change is a change from one state of matter to another; a chemical change results in a new substance formed. c. a physical change produces a new element, and a chemical change results in a bond breaking between atoms. d. a chemical change does not result in a new substance being formed, whereas a physical change does.