Câu hỏi
Which of the following is an example of a chemical process? cutting a piece of wood into small wood chips burning a marshmallow dissolving table salt in a glass of water boiling water turning into steam
Giải pháp
4.7
(202 Votes)
Twila Baxter
Master · Tutor for 5 years
Answer
Burning a marshmallow is an example of a chemical process.
Explanation
1. Identify Chemical vs Physical Processes A chemical process results in the formation of new substances with different properties, while a physical process does not change the chemical identity of the substance.2. Analyze Each Option - Cutting wood: Only changes size/shape, no new substance formed (physical).- Burning marshmallow: Combustion produces new substances like carbon dioxide and water vapor (chemical).- Dissolving salt: Salt disperses but can be recovered by evaporation; no new substance formed (physical).- Boiling water: Water changes state from liquid to gas, but remains H
O (physical).3. Select the Correct Example The only option involving a chemical change is burning a marshmallow.