What happens if you leave candle burning?

Burning a candle for too long will cause carbon to collect on the wick, leading it to "mushroom." The wick will then become unstable and produce a dangerously large flame. Plus, your candle will start to smoke and release soot. Avoid this by always following the manufacturer's instructions.

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Thereof, how do candles work?

When you light a candle wick, the wax around the base of the wick melts. Through capillary action, this liquid hot wax is drawn up the wick. The heat of the flame turns the wax into a hot gas (a.k.a. vaporizes it) and starts to break down the wax into molecules of hydrogen and oxygen. Can candles make your snot black? Tests have confirmed, however, it is very possible decorative scented candles are a primary culprit. Research indicates increased BSD is often the result of candle manufacturers adding additional fragrance oils to their products, along with improper wick trimming by customers.

How would a candle start a fire?

Candles turn to liquid in order to release their fragrance and this wax carries heat and that can cause another surface, such as a wood table, to catch fire. Over half of candle fires start because the candle is too close to combustible materials. Can candles cause house fires? Candles cause an estimated 15,600 fires in residential structures, 150 deaths, 1,270 injuries, and $539 million in estimated direct property damage each year. Over half (55%) of home candle fires start because the candle is too close to some combustible material.

In respect to this, why does my candle wick?

If you've ever had a candle with a black cap on the end, or what looks like a mushroom cap, it means your candle wick is mushrooming. In essence, the ratio of wax to wick is off. The buildup of excess materials left from not burning correctly is the cap of carbon particles you see, otherwise known as a mushroom wick.