- #1
jadelamlam
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Homework Statement
The picture shows the settings of the experiment.The aim of this experiment is to investigate about the expansion and contraction of gas.
When the boiling tube is put into boiling water,the coloured water rises as air in the tube expands when heated
When the boiling tube is put into melting water,the coloured water falls as air in the tube contracts when cooled.
I would like to ask,why the coloured water in the narrow glass tube would not fall into the boiling tube due to gravity before putting the boiling tube into boiling water and melting water?
Thx