Question

19. Which of the following statements suggests that a chemical change has occurred?Select one:a. A student made a popsicle by leaving fruit juice in the freezer.b. A beach raft was inflated.c. A dog ripped apart the morning newspaper.d. An automobile rusted in the junkyard.

Answer 1

A chemical change is defined as a reaction that occurs and end up with a change in the components involving the reaction, a change in the chemical formula, and not just in the physical state of the compound (for example, the compound going from liquid to frozen). In our question, we have letter D as being the only chemical change, because rusting of metals, like iron, is an oxidation reaction, in which iron metal becomes iron oxide, therefore a chemical change. Answer letter D