how can we we say that burning of candle is a chemical change and glowing of bulb is a physical change?
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burning of candle is a process which is irreversible and it changes the state of matter so it is a chemical change while glowing of bulb is a physical change as no new substance is formed and there is no change state of matter.
hope it helps..
hope it helps..
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) Chemical Change
The wax acts as a fuel when we light the candle and is basically a chemical substance called carbon. The carbon combines with oxygen to form another chemical substance called carbon dioxide. Also the unburnt carbon is deposited as black substance called soot. This signifies a chemical change.
Yes! Glowing of bulb is a physical change.
When an electric current is passed through the filament of a bulb, the filament starts glowing and the glow stops as soon as the current is cut off. The chemical composition of the tungsten filament does not change on application of current
The wax acts as a fuel when we light the candle and is basically a chemical substance called carbon. The carbon combines with oxygen to form another chemical substance called carbon dioxide. Also the unburnt carbon is deposited as black substance called soot. This signifies a chemical change.
Yes! Glowing of bulb is a physical change.
When an electric current is passed through the filament of a bulb, the filament starts glowing and the glow stops as soon as the current is cut off. The chemical composition of the tungsten filament does not change on application of current
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