Two balloons are filled with an equal volume of air. One is put in the refrigerator for an hour, while the other is heated in a slightly warm oven. Identify which balloon is which, and explain why.
To identify which balloon is which, you can consider the effects of temperature on the air inside the balloons.
When air is heated, it expands and takes up more volume. Conversely, when air is cooled, it contracts and takes up less volume.
In this scenario, one balloon is placed in the refrigerator, which is a cold environment, while the other one is heated in a slightly warm oven.
If you observe that one balloon has decreased in size and the other has increased in size compared to their original volumes, you can conclude that the smaller balloon is the one that was placed in the refrigerator, and the larger balloon is the one that was heated in the oven.
The balloon that was put in the refrigerator decreased in size because the cold temperature caused the air inside to contract. Conversely, the balloon that was heated in the oven increased in size because the warm temperature caused the air inside to expand.
This difference in volume change due to temperature is why you can identify which balloon is which.
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