why do all substances not produce flame on burning
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. We all must have seen aburning candleand found that it burns with a flame giving out heat and light. Imagine burning a piece of coal. Coal too burns in air producing carbon dioxide, heat andlight. But it does not produce any flame. So why do some substances produce flame while others don’t?The chemical process in which a substance reacts with oxygen to give off heat is called combustion. Substances that undergo combustion are called combustible substances. It may be a solid, liquid or gas. Along with heat, some produce flame or glow. The substances which vaporize during burning give flames. For example combustion of kerosene oil produces flame. On the other hand certain substances like coal do not vaporize and hence doesn’t produce a flame.A side effect of the chemical reactions (that takes place while a substance is burning) is a lot of heat.
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. We all must have seen aburning candleand found that it burns with a flame giving out heat and light. Imagine burning a piece of coal. Coal too burns in air producing carbon dioxide, heat andlight. But it does not produce any flame. So why do some substances produce flame while others don’t?The chemical process in which a substance reacts with oxygen to give off heat is called combustion. Substances that undergo combustion are called combustible substances. It may be a solid, liquid or gas. Along with heat, some produce flame or glow. The substances which vaporize during burning give flames. For example combustion of kerosene oil produces flame. On the other hand certain substances like coal do not vaporize and hence doesn’t produce a flame.A side effect of the chemical reactions (that takes place while a substance is burning) is a lot of heat.
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Answer:
because coal does not vaporize on burning
Explanation:
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