| Today we compared how long candles burn when different sized jars
were placed over them. We noticed that the larger jars (with more oxygen)
allowed the candles to burn longer.
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Even more exciting was the second part of our experiment. The jar was
placed in a saucer filled with colored water.
The burning stopped when all of the oxygen in the jar had been used up.
The temperature within the jar fell after the candle stopped burning, causing the volume of the air to decrease.
This caused water to get sucked into the jar after the candle stopped burning.
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