Which two sentences taken together provide the best evidence to support the ideas that both physical and chemical change can significantly change the appearance of a substance ? A. in a physical change the material involved is structurally the same before and after the change

B. a piece of metal may be heated in a fire until it glows but the metal is the same material before Heating and after Cooling

C. chemical changes require the breaking and forming of chemical bonds during a chemical reaction

D. the creation of a new ,solid substance from to liquid substance into the kids that a reaction has taken place that has alerted the original substance