Question

Give reason : Explosion of crackers is a chemical change.​

Answer 1

Answer:

Explosion of a cracker is a chemical change because the explosive reactants are transformed into gaseous products along with heat, light and sound which cannot be reversed. Hence, it is a chemical change.

Explanation:

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.

Answer 2

Answer:

Explosion of crackers is chemical change because a new substance is formed(ash) after cracker is completely burned