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प्रश्न
Melting of solid (wax) is a physical change.
उत्तर
Melting of solid wax is a physical change because no new substance is formed during this change.
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संबंधित प्रश्न
Fill in the blank
Burning of fuel is a _______ change.
State whether the following is physical or chemical changes.
Melting of wax —
True or false?
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What role does energy play in initiating a chemical change ?
Under which different types can the following changes be classified?
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Under which different types can the following changes be classified?
Revolution of the earth around the sun.
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Give reason.
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Explain in brief the involvement of energy in physical and chemical changes.
The difference between initial state and the final state is called change.
