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What Happens to the density of the air in the balloon when hot air is added?
-The hot air inside of the balloon is less dense than the surrounding air.

Why Will The Balloon Rise?
-Hot air is less dense than the surrounding air, which causes the ballon to lift off of the Ground.

How would the experiment be diffrent if we used cold air?
-It wouldnt float because the cold air is more dense than the warm air. So therefore it would never float off of the ground

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the bottom of the balloon

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A gas law, stating that the pressure and volume of a gas have an inverse relationship, the temperature is held constant. The pressure will make the balloon shrink.

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An experimental gas law that describes how gases tend to expand when heated. When hot air is added to the balloon, the balloons' volume expands.

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together to form the balloon

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so the balloon will be stable