What happens to a lighted candle after some time?

The carbon in the wax reacts with the remaining oxygen during the combustion reaction and produces carbon dioxide and heat. When all the oxygen is used up by the candle, then it will stop burning and finally extinguishes the fire of the candle.

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Why did the flame stop burning?

Carbon dioxide molecules are heavier than air. Because of this, they push the oxygen and other molecules in the air out of the way as they sink down over the flame and candle. This makes the flame go out. Which candle light goes off first? the tall candle You will see the tall candle goes out first. The flames are consuming oxygen and produce carbon dioxide. The product is hot so it is less dense than the cold air. Hence the carbon dioxide rises to the top and suffocate the tall candle.

Why did the smoke ignite while the candle without smoke did not?

3) Therefore, as you hold a flame close to the smoke it will light the unused wax vapor that is in the smoke. It will then follow the fuel (wax vapor) all the way back to the candle wick where there will be enough fuel for the candle too continue burning like it was before you blew it out. Keeping this in consideration, how long should you wait before lighting a candle? The first thing to do is just to wait before lighting the candle. Most people recommend at least 24 to 48 hours for a paraffin-based candle, and up to a week for a soy-based candle.

What is the science behind magic candles?

The flame you see in a candle is burning paraffin vapor. When a trick candle is blown out, the burning magnesium particles appear as tiny sparks in the wick. When the 'magic' works, one of these sparks ignites the paraffin vapor and the candle starts to burn normally again.