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The scientific name for burning is combustion. There are different kinds of combustion. In most cases a very simple thing takes place. Oxygen from the air combines with some material that can burn. This reaction produces heat. If the process takes place rapidly, we see flames or an intense glow or actually feel the combustion, as in an explosion. When wood or paper combines with oxygen, we have flames.
We also have combustion in the engines of automobiles. Gasoline burns with oxygen taken from the air. It happens so rapidly that we call it an explosion. Ar the opposite end, rusting of iron is a combustion which goes on so slowly that we may not notice it for years. If the heat that results during a slow combustion problem cannot escape into the air, the temperature may reach a point where active burning begins. This is called spontaneous burning. This happens when oily rags are left in a closed place. The oil undergoes slow oxidation or burning which results in heat. Since the heat cannot escape, the temperature rises and the rag bursts into flames.
Oxygen, which is necessary for combustion, is one of the most common elements in nature. The air that normally surrounds us contains approximately 21 per cent of oxygen. This oxygen is forever ready to start a combustion process,
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The scientific name for burning is combustion. There are different kinds of combustion. In most cases a very simple thing takes place. Oxygen from the air combines with some material that can burn.
It happens so rapidly that we call it an explosion. Ar the opposite end, rusting of iron is a combustion which goes on so slowly that we may not notice it for years.
Since the heat cannot escape, the temperature rises and the rag bursts into flames.
Oxygen, which is necessary for combustion, is one of the most common elements in nature. The air that normally surrounds us contains approximately 21 per cent of oxygen.
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