The candle burning we see is not the burning of paraffin solid, but the ignition device ignites the cotton core, and the heat released makes the paraffin solid melt and vaporize again, generating paraffin vapor, which is flammable.

(Solid paraffin is also flammable) The combustion phenomenon in oxygen cylinders is that the flame is bright, giving off white light, releasing heat, and water mist appears on the bottle wall. The reaction expression is paraffin+oxygen-ignition = water+carbon dioxide.

When you blow out the candle, you can see a wisp of white smoke. Igniting this wisp of white smoke with a burning match can rekindle the candle, so it can be proved that white smoke is a solid fine particle produced by the solidification of paraffin vapor when it is cold.

Extended data

Classification of candles:

Candles can be divided into two types: rough wax and smooth wax. Generally, the surface of coarse wax often has a taste, and there is a layer of frost on it. Different crude waxes will bring different smells.

For example, you can put some lavender-flavored candles in the bedroom to play a hypnotic and calming role. You can put marine candles in the bathroom, and you can also put some scattered candles to repel mosquitoes in summer. The smooth wax has no taste, and the surface of the wax body is very smooth, so it is easy to make beautiful shapes.

Candles can be generally divided into extruded cylindrical wax, pointed bamboo wax, torch wax, floating wax, round head wax, flat head wax, etc., and there are many colors.

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