What keeps the candle burning activity?

Fire is a chemical reaction that creates light and heat from oxygen and fuel. A lit candle needs to draw oxygen from the air in order to continue burning. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen.

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Moreover, what happens if you let a candle burn all the way down?

The National Candle Association (www.candles.org) states that the reason to not burn the wax (in a container or just a candle itself) all the way down is SAFETY. A glass jar or container can become too hot, causing it to break or shatter and possibly causing a fire as well as other damage. When a candle is lit what happens to the rod just above it? Energy is transferred to the metal of the rod just above it. The thermal energy of this part of the rod increases and the rod becomes hot. Which pin or paperclip dropped off the metal rod first? The one closest to or furthest from the Bunsen burner?

People also ask does burning of candle clean the air?

Beeswax or soy candles. These candles burn cleaner than regular paraffin wax. Beeswax candles clean the air by releasing negative ions into the air which bind with toxins and help remove them from the air. And another question, what are candle wicks for? Candle wicks are normally made out of braided cotton. Wicks are sometimes braided flat, so that as they burn they also curl back into the flame, thus making them self-consuming. Wicks can be made of material other than string or cord, such as wood, although they are rare.

And another question, why do candle wicks curl?

The "mushroom" shape, formed at the end of a candle wick after burning, is the result of carbon buildup, where the flame consumes more wax than it can burn. If "mushrooming" occurs with your candle, we recommend trimming the carbon buildup off the wick between burnings.