Question

candle burns both physical and chemical change occur explain​

Answer 1

ANSWER ----------------

INTRODUCTION -------

PHYSICAL CHANGE :

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A change which is reversible and the properties do not change of the matter.

CHEMICAL CHANGE :

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A change which is irreversible and the properties of the matter change and form new substance.

QUESTION :

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When a candle burns both physical and chemical changes occur.

PHYSICAL CHANGE :

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When the candle burns , the wax begins to melt and changes it shape. This melted wax can be again moulded to form the same shape.

Hence , it is reversible change since the properties of wax do not change.

CHEMICAL CHANGE :

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When the candle melts , the wick burns and slowly it begans to decrease its length and turns into black. This burnt wick cannot be again changed into the original white wick.

The burnt wich is of no use and hence it is an irreversible change.

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# BE BRAINLY

Answer 2

Explanation:

When a candle burn both physical and chemical change occur because as the candle burn , its starts to reduce in size and chemical energy stored in it converted into heat and light energy