HTH Learning Videos

Sharrock - Bubbles CER

Sharrock - Bubbles CER

Jan, Ramon, Andrea & Rachel claim that adding water increases carbon dioxide sublimation and causes bubbles to float higher

Their evidence is that when they add room temperature water the rate of sublimation appeared to increase because the dry ice dissappeared faster, and the bubbles floated higher after water was added, and sank faster when the dry ice was all gone.

Their Reasoning is that the air bubbles float on the denser layer of carbon dioxide gas, and when it is produced at a faster rate - more carbon dioxide present in the tank caused the bubbles to float higher than when there wasn't  as much carbon dioxide.

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Description

Jan, Ramon, Andrea & Rachel claim that adding water increases carbon dioxide sublimation and causes bubbles to float higher

Their evidence is that when they add room temperature water the rate of sublimation appeared to increase because the dry ice dissappeared faster, and the bubbles floated higher after water was added, and sank faster when the dry ice was all gone.

Their Reasoning is that the air bubbles float on the denser layer of carbon dioxide gas, and when it is produced at a faster rate - more carbon dioxide present in the tank caused the bubbles to float higher than when there wasn't  as much carbon dioxide.

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