Question

part a consider the images depicting change. which statement accurately describes a change taking place in one of the images? a the water in image ii is undergoing a chemical change because there is a change in phase. b the pipes are undergoing a physical change because they are still pipes; nothing new is formed. c a chemical change is occurring in image ii because heat energy is being removed from liquid water. d the pipes in image i are going through a chemical change called rusting; the evidence is the color change.

Explanation:

Phase - change of water is a physical change, not chemical (eliminates A). Removing heat energy from liquid water causing a phase - change is a physical change, not chemical (eliminates C). A physical change means the substance's identity remains the same; just its appearance or state may change. Rusting is a chemical change as a new substance (rust) is formed. The color change in the pipes of image I is evidence of rusting, a chemical change. Pipes remaining pipes with no new substance formed is a physical change description which is correct for physical changes. But the rusting in image I is the most accurate chemical - change description among the options.

Answer:

D. The pipes in image I are going through a chemical change called rusting; the evidence is the color change.