Question

Bursting of crackers is a chemical change- Give reason

Answer 1

Answer:

Because after bursting of crackers one cannot make it again (the burst crackers)as the chemical properties are changed. Hence bursting of crackers is a chemical change. But one can freeze melted chocolate and eat it as it is a physical change.

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Answer 2

Answer:

Bursting of crackers is a chemical change because when the crackers are bursted they produce heat and sound energy and change of energy takes place it uses oxygen in air to burn or burst and also a new substance is formed ash and it cannot be reversed which is the main characterstic of a chemical change.✌✌✌✌✌✌✌✌✌✌✌✌✌✌✌