Final answer:
A product vs process change refers to differences in business strategies, not scientific concepts. The student's question seems to conflate this with scientific terms. The correct focus should be on understanding the difference between physical changes, which do not alter chemical identity, and chemical changes, which do.
Step-by-step explanation:
When distinguishing between a product vs process change, one is often referring to the difference between a change in the physical characteristics of a substance versus the way production is carried out. However, the question seems to be mixing up these business concepts with scientific processes, specifically physical and chemical changes. Based on the provided exercises, the focus should be on understanding physical and chemical changes.
A physical change is a change that occurs when the physical properties of a sample of matter change, but its chemical identity remains the same. An example of a physical change is water turning into ice or snow; the state changes, but the molecular composition (H₂O) does not. A chemical change, on the other hand, involves a change in the molecular composition. For instance, when bread dough becomes fresh bread in the oven, a chemical change occurs because the ingredients undergo a chemical reaction to form new substances. Similarly, a fire in a fireplace represents a chemical change, as the burning of wood transforms the chemical composition of the wood into heat, ash, and gases.