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4 answers

The candle goes out because the oxygen is consumed by the flame.
The water rises because the hot gases created by the burning flame soon cool and contract. (The opposite of the expanding of the gases created by a flame under a hot-air balloon.) That contracting lowers the pressure inside the beaker and that low pressure draws the water up into the beaker.

2007-06-05 10:15:45 · answer #1 · answered by Philip H 7 · 0 0

The candle goes out because it burns the available oxygen.

It's hard to explain why the water level would rise (ie, the gas volume goes down). Maybe because the temperature drops after the candle goes out?

2007-06-05 10:01:27 · answer #2 · answered by Anonymous · 0 0

It has no longer something to do with the quantity of oxygen however the temperature of the air while the candles are coated by utilising the jar. heat air is way less dense simply by fact the comparable quantity of chilly air. so simply by fact the air cools while the candles pass out it creates a vacuum from the air condensing and sucking water into the jar. by utilising utilising extra candles it creates extra warmer air subsequently extra of a vacuum simply by fact the air cools to room temperature.

2017-01-10 14:46:03 · answer #3 · answered by ? 4 · 0 0

heated water always rises due to the increased energy of the molecules. When the water molecules have increased energy theny move faster create more energy and break apart creating extra oxygen molecules (air) which allows the water to rise

2007-06-05 10:00:04 · answer #4 · answered by mpagriffin 2 · 0 3

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