How can we say that burning of a candel is a cheical change but glowing of a bulb is a physical change
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during burning of candlenew 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 changesince no new substance with different properties is formed.
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during burning of candlenew 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 changesince no new substance with different properties is formed.
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