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Burning a candle is a chemical change. It cannot be "unburnt"

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14y ago

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As a candle burns it gets shorter and shorter describe a chemical change that explain this?

I believe there is no chemical equation for this. this is because though the wick burning has a chemical reaction, the wax melting, making the candle shorter, is not undergoing a chemical reaction. simply a short change of state. If you were referring to the wick brurning though, this would be a combustion reaction. hope that helps.


A pencil becomes shorter after sharpening is it a physical or chemical?

Sharpening a pencil is a physical change because it does not alter the chemical composition of the pencil. The act of sharpening simply removes material from the pencil, making it shorter in length.


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What kind of changes is a burning candle?

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