Why burning of candle is a chemical change?

Change is mass

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Formation of new products

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Original properties are changes

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All of above

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Solution

The correct option is D All of above
Burning is a chemical change that involves oxidation thus producing heat and light. When a candle is burnt in air, the mass of the product is increased due to atmospheric oxygen which combines with the carbon and hydrogen of the candle wax during burning to produce water vapour and carbon dioxide. Also, the original properties of the reactants are altered. All these factors prove that the burning of a candle is a chemical change.

Hence, the correct option is $D$

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Similar questions

Q. Is burning of a substance always a chemical change? Explain how burning of candle involves both physical and chemical change.

Burning of a candle is a chemical as well as physical change, why?

1. The physical change occurs when the wax of candle melts and it loses its shape
2. The chemical change is combustion of fuel in presence of oxygen. This leads to the production and emission of carbon dioxide from the flame
3. The burning of a candle is only a chemical change
4. The burning of a candle is only a physical change

Q. Which of the following are physical changes and which are chemical changes ?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.

Q. On burning a candle, chemical energy of the wax is converted to light energy.

Is burning a candle is a chemical or physical change or both

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