What is the scientific principle of candle burning in water, which can accompany children

Because, the wax that melts during the burning process of the candle will quickly turn solid when it encounters water and freeze around the flame. But when the flame is below the surface of the water, why doesn't it melt the wax cylinder?Because the water quickly carries away the heat that is forcing on the wax cylinder, the wax cylinder protects the flame from burning. ”

Try it: a thicker candle sticks to the bottom of the basin, pour some water into it, and the candle rises a little above the water.

Light the candle and see if the candle can burn below the surface of the water, and in the process, does the size of the flame change?

Tell you: candle oil forms a protective ring that prevents water from entering, so the water can "light up".

From Tranquil Haven 65

Because that's why science makes sense.

When a candle burns in water, the process of its burning is inhibited by water. When the spine burns in water, both the heat and flame of the candle decrease. As a result, large candles may burn more slowly in water than smaller candles.

In addition, when a large candle burns in water, it may burn less heat than a small candle because the large candle is larger in size, while when burning in water, the heat of the candle is limited by air leakage.

In general, large candles may burn more slowly and may burn less heat than small candles.

Because, the wax that melts during the burning process of the candle will quickly turn solid when it encounters water and freeze around the flame. However, when the flame is below the surface of the water, the water will quickly carry away the heat that is forcing on the wax cylinder, so the wax cylinder will protect the flame from burning.

When the candle burns, it consumes fuel, which means that when the gravity of the candle head and the iron nail is greater than the buoyancy, it should sink, but what we observed is that the candle floats on the water and continues to burn.

Why is that?The reason is that the wax does not reach the melting point in water, so it does not evaporate or burn off, so the wax oil is like a funnel, supporting the wick to continue burning until the water pressure causes the candle wall to break.

Experimental principle: After lighting the candle, the molten candle oil will cool and solidify into a solid when it encounters cold water, isolating the candle core from the water like a wall.

As the candle burns, the flame slowly burns below the surface of the water.

So there is a scene of fire and water together.

Summary. Candles lit in water are usually only used for chemical experiments and are not very suitable for everyday life applications. Because when the candle is lit in water, the gas produced by the combustion is not easy to discharge, and it is easy to cause danger.

In daily life, candles should be used in strict accordance with safe use norms, and should never be used improperly to avoid danger.

Candles lit in water are usually only used as chemical experiments and are not very suitable for everyday life applications. Because when the candle is lit in water, the gas produced by the combustion is not easy to discharge, and it is easy to cause danger. In daily life, candles should be used in strict accordance with safe use norms, and should never be used improperly to avoid danger.

Candles burned in water are not usually used in everyday life applications because candles produce a lot of smoke and carbon dioxide when burned, which has a certain impact on human health. However, the phenomenon of candles lit in water can also be used for science education, art performances, etc. 1.

Science education: In chemistry teaching, chemical experiments similar to "lighting a candle in water" can be carried out, and students can feel the magic of chemical reactions by observing the phenomenon of candles lit in water. In the restaurant industry, some people light candles in the water to set the mood.

2.Artistic performances: In some specific artistic performances, lighting candles in water is also often used as a form of performance with special effects, such as imitating the scene of water fiercely judging fire on the stage.

It should be noted that the candle lighting in water will produce a large amount of water vapor and smoke, and some toxic gases will also be released, so it is necessary to pay attention to safety and try to avoid this kind of experiment or performance in a closed environment, so as not to have a bad impact on human health.

1. When the burning part of the candle touches the water surface, the wax produced by the combustion will float on the water surface because the density is smaller than that of water, thus forming an isolation zone to separate the water from the burning flame.

2. When the candle burns below the surface of the water, because the temperature of the water is lower than that of the candle, the outermost layer of the candle will form a thin "wall" to protect the candle flame.

3. However, in the process of continuing to burn, the exchange of carbon dioxide and oxygen produced by the candle flame will become weaker, and the candle flame will eventually be extinguished due to the lack of simple oxygen.