| Materials Required |
- Empty bottle
- A Balloon
- Hot water
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How to do it
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- Stretch the balloon over the mouth of the empty bottle.
- Place the bottle in the hot water, leave it for few minutes and ask your kid to observe what happens.
- The balloon will start expanding.
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Explanation
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| As the bottle is kept in the hot water, the air inside the bottle is getting warer and hence the molecules move apart. This causes th eballoon to expand. |
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