my brother did an experiment at school about a candle that u put it in a vase of water (the candle is lighted), then u put a tube on the candle, after a while the candle lights off ( no oxegen), and the waterlevel rises. So my question is: Why the water level rises a little after that the candle stops burning??
2007-06-20 07:35:28 · 3 answers · asked by lallous 1 in Science & Mathematics ➔ Physics
Because the gas cools down after the candle goes out
2007-06-20 07:38:35 · answer #1 · answered by dogsafire 7 · 0⤊ 0⤋
The oxygen has been burned by the candle, leaving a vacuum. Once the oxygen is gone, the candle goes out, and the water rises to take up the space the oxygen had been occupying.
2007-06-20 14:51:03 · answer #2 · answered by therealchuckbales 5 · 0⤊ 0⤋
I believe the amount of water vapor generated by burning the candle wax would be too small to make a noticeable difference in the water level.
I don't see any reason that the water level would increase once the candle stops burning. My guess is he simply saw what he wanted to see.
2007-06-20 14:41:42 · answer #3 · answered by lithiumdeuteride 7 · 0⤊ 1⤋