Question

Draw a picture of a burning candle and write the type of changes observed.

Answer 1

There are three layers that are observed in a burning candle.

Explanation:

Following are the layers that are observed in a burning candle:-

1. Dark Zone:- It is the innermost zone consisting of unburnt materials.  The air is absent in this reason and it is least hot.
2. Luminous Zone:- It is the middle zone and yellow in colour. This zone has a moderate supply of air and it is also moderately hot.  The partially burned fuel produces smoke or soot in this zone.
3. Non-luminous Zone:- It is the outer-most zone and is blue in colour. As this zone has the full supply to air, it shows complete combustion. This zone is the hottest zone of all.  

Please refer to the image attached for the diagram.

Answer 2

Answer:

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