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प्रश्न
Classify the following as chemical or physical change:
Burning of paper and wood
विकल्प
Chemical change
Physical change
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उत्तर
Chemical change
Explanation:
Burning paper is a chemical change since the combustion products, carbon dioxide, water vapours, smoke, and ash, cannot be turned back into paper or wood using any physical means.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Classify the following as chemical or physical change:
Boiling of water to form steam.
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Write true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Fill in the blank
Heat is ________ by a gas during the process of condensation.
Classify the following as a physical or a chemical change.
Melting of wax
Classify the following as a physical or a chemical change.
Burning of coal
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
