Question
The chocolate artist creates a temperature-control pack by adding 20 grams of calcium chloride to the pack along with the water. She tests the pack by placing it inside of a box along with some chocolate. The package is placed in the delivery van for one hour. When she opens the package, she finds that the chocolate melted. Which statement best explains why the temperature-control pack failed?
A.
The temperature-control pack needed to include a greater amount of calcium chloride than 20 grams.
B.
The temperature-control pack needed to include a smaller amount of calcium chloride than 20 grams.
C.
The temperature-control pack contained substances that reacted to create a cold pack, not a hot pack.
D.
The temperature-control pack contained substances that reacted to create a hot pack, not a cold pack.
A.
The temperature-control pack needed to include a greater amount of calcium chloride than 20 grams.
B.
The temperature-control pack needed to include a smaller amount of calcium chloride than 20 grams.
C.
The temperature-control pack contained substances that reacted to create a cold pack, not a hot pack.
D.
The temperature-control pack contained substances that reacted to create a hot pack, not a cold pack.
Answers
GPT-4o mini
The best explanation for why the temperature-control pack failed is:
**D. The temperature-control pack contained substances that reacted to create a hot pack, not a cold pack.**
Calcium chloride is commonly used in endothermic reactions, meaning it absorbs heat from its surroundings, which would typically be used to create a cold pack. However, if the observed effect was that the chocolate melted, it suggests that the reaction did not effectively absorb enough heat, potentially indicating a failure in the system designed to maintain a low temperature.
**D. The temperature-control pack contained substances that reacted to create a hot pack, not a cold pack.**
Calcium chloride is commonly used in endothermic reactions, meaning it absorbs heat from its surroundings, which would typically be used to create a cold pack. However, if the observed effect was that the chocolate melted, it suggests that the reaction did not effectively absorb enough heat, potentially indicating a failure in the system designed to maintain a low temperature.