Question

how can we say that a burning of candle is a chemical change but the glowing of bulb is a physical change ?​

Answer 1

☆Burning of candle involves both types of changes physical as well as chemical. In this process the solid wax changes into liquid wax i.e. the state of a substance changes, hence it is a physical change. Also, during burning of candle new substances like carbon dioxide gas and water vapour are produced, hence it is a chemical change as well.

Glowing of an electric bulb is a physical change since no new substance with different properties is formed.

Answer 2

Answer:

HERE IS YOUR ANSWER..

Explanation:

BURNING OF CANDLE is the process which is

irreversible and it changes the state of matter so it is a chemical change while..

GLOWING BULB is a physical change as no new substance is formed and there is no change states in matter...

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