Why does blowing on a flame make it go out?

Why does blowing on a flame make it go out?

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.

Why does a burning candle go out when you below on it?

A burning candle goes out when you blow on it because you remove the hot air around the flame bringing down its temperature below the flash point, and hence, the candle goes out.

When a fire does not burn properly air is blown on it?

Answer Expert Verified A slow fire bursts into flame when air is blown on it because air contains 21% of oxygen gas which supports combustion. Hence fire burns into flame whereas when we blow air over burning candle , flame is put off because when we blow we release CO2 gas which acts as fire extinguisher.

How does blowing put out fire?

When you blow, you cool down the gases and the surface of the candle and spread out the wax vapor. So when you blow on it, there’s no longer a region which has enough wax molecules in it and also is hot enough to get the reaction to occur. The gas may now not either be hot enough or have dense enough wax vapor.

What are the three main ways in which a fire can be controlled or put out?

What are the three main ways in which a fire can be controlled or put out? Solution: Fire can be put out by taking away the fuel, stopping the supply of oxygen or by lowering down the temperature around the fuel, so that the fuel is not able to attain its flash point.

What do you understand by the flash point of a fuel?

Answer: The ‘flash point’ of a fuel is a certain temperature at which any fuel begins to burn. It is also called the ‘kindling temperature of the fuel’.

Does Coke produce flame?

In factories, we use coal or fuel oil or natural gas. The materials, such as wood, coke, LPG (liquid petroleum gas), petrol, diesel, natural gas have one property [n common, i.e., they produce heat on burning which is then put into different uses. Furthermore, some materials on burning produce flame and some do not.

Can air put out fire?

If you want to put out a fire, just get rid of one of those three things – fuel, oxygen or heat. The oxygen comes from the air. It is the same oxygen we breathe. Since the oxygen has to be in contact with the fuel, if you can coat the fuel with something that keeps the oxygen away, the fire will go out.

Is fire a friend or foe?

Fire is indeed a friend but, as we know, it can be a dangerous enemy once it gets out of control.

What was early man frightened of?

fire
Answer: (i) Early man was frightened of fire.

What is the difference between flash point and fire point?

The flash point of a liquid hydrocarbon is the temperature to which it must be heated to emit sufficient flammable vapor to flash when brought into contact with a flame. The fire point of a hydrocarbon liquid is the higher temperature at which the oil vapors will continue to burn when ignited.

What is meant by fire point?

: the lowest temperature at which a volatile combustible substance continues to burn in air after its vapors have been ignited (as when heating is continued after the flash point has been determined) — compare ignition temperature.

Why does a flame go out when you blow on it?

Some people say the fire goes out when you blow on it or in the presence of wind because the fire is being deprived of oxygen. This makes no sense because your breath and the wind are full of oxygen.

Why does a candle go out when you blow it out?

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. When oxygen is pushed away from the wick, it can’t react with the wax anymore. This makes the flame go out. Next time you blow out a candle,…

Why does the flame go out when carbon dioxide is poured on it?

Why does the flame go out when carbon dioxide is poured on it? 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.

Why does the flame go out when the jar is covering it?

Why does the flame go out when the jar is covering it? The substance that reacts with the candle wax is oxygen. It comes from the air. Putting the jar over the candle keeps oxygen from outside the jar from getting in.