Question

explain the reason why some substances burn with a flame​

Answer 1

Answer:

Substances when burn produce heat and light. Some of them also produce flame with light. The substances which vaporize during burning produces flame. As these substances heat up, like candles, the rising C-atoms produce light.

Substances when burn produce heat and light. Some of them also produce flame with light. The substances which vaporize during burning produces flame. As these substances heat up, like candles, the rising C-atoms produce light.Explanation:

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Answer 2

Explanation:

a flame is produced as a result of combustion.

hence combustion is the chemical process of giving out flame.incombustible substance only vaporize in excess heat without giving a flame so in the process of combustion, a substance reacts with oxygen to produce flame and heat.