A balloon is stretched over the neck of a flask. When the flask is placed in a bowl of ice-cold water, the balloon deflates and is sucked into the flask. This is because __________.
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Worked Solution
Step 1: Ice-cold water causes the flask and the air inside to lose heat.
Step [2-9]: Air is a gas and contracts significantly when it loses heat.
Step [2-9]: The reduction in volume of air inside the flask creates lower pressure, causing the balloon to deflate.
Correct answer: the air inside the flask lost heat and contracted
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