Why Water Can Extinguish Flowers is explained with chemical knowledge

The fact that water can extinguish fires is determined by the physical and chemical properties of water. Water is not a combustible substance, the chemical properties of water are stable, water and fire can absorb a large amount of heat in the fire after contact, so that the temperature of the burning substance drops below the ignition point and extinguishes, how much heat can water and fire absorb from the fire? If you raise the temperature of 1 liter of water by 1 degree, you need to absorb 4185 joules of heat, if you want to make 1 liter of water go from 25 to 100 liters, you need to absorb joule heat, and if 1 liter of water completely turns into water vapor, you need to absorb Joule heat.

1 liter of 25 liters of water can absorb Joule heat in total, and it will all turn into steam, and pouring 1 liter of water on a regular stove will immediately extinguish the fire. 1 litre of water is readily available, so people often use water as a fire extinguishing agent.

Water can extinguish fires is a physical reaction, not a chemical reaction.

In terms of the conditions of combustion, water isolates the object from the air and lowers the temperature of the object below the ignition point.

Water can extinguish fires is determined by a combination of the physical and nuclear properties of the water and the conditions under which the fire burns.

1. Water is not a combustible substance;

2. The chemical properties of water are stable;

3. After water and fire come into contact, it can absorb a large amount of heat in the fire, so that the temperature of the burning substance can be lowered below the ignition point and extinguished;

4. The combustion of fire needs an ignition source and an accelerant, and under natural conditions, the oxygen in the air is the accelerant, and the water can isolate the air well.

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You rent a buddy type to do. The answer for you is as follows: the principle of water fire extinguishing, because the heat of vaporization of water is very large, when the water flows through the burning object, most of the heat in the burning object will be absorbed in a balanced manner, reducing the temperature of the burning object.

Water can cool, suffocate, dilute, dissolve, emulsify, and thus extinguish fires.

The principle is that water will evaporate quickly in a place with high temperature, and a large amount of heat should be absorbed during evaporation, which can reduce the temperature of combustibles to the ignition point. At the same time, the density of water is greater than that of air, and it will adhere to the surface of combustibles and play a role in isolating oxygen, so as to achieve the purpose of extinguishing fires. <

The principle is that the excavated water will evaporate quickly in a place with high temperature, and a large amount of heat should be absorbed during evaporation, which can reduce the temperature impulse of combustibles to below the ignition point. At the same time, the density of water is greater than that of air, and it will adhere to the surface of combustibles and play a role in isolating oxygen, so as to achieve the purpose of extinguishing fires.