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Natural and Man-made Chemical Changes

The explosion...

Question

The explosion of fireworks is an example of _________ change.

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Solution

The explosion of fireworks is an example of chemical change. The chemicals invoved in it explode due to fire spark.

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Similar questions

Q. Fill in the blanks with the correct words.
1. Melting of ice-cream is an example of a/an .................... (reversible/irreversible) change.
2. Ripening of fruits is an example of a/an .................... (reversible/irreversible) change.
3. Cooking of foood is an example of a/an .................... (reversible/irreversible) change.
4. Breaking of glass is a .................... (physical/chemical) change.
5. .................... (Heating/Cooling) causes steam to change into water.

Q. Fill in the blanks to say whether the following changes are 'reversible' or irreversible':
1. A change which cannot be reversed is called ............................... .
2. Setting of cement is an example of a ............................... change.
3. Absorption of water by a sponge is an example of a ............................... change.
4. Cooking of food represents ............................... change.
5. Digestion of food is a ............................... change.

Explain why, explosion of a firework (such as a cracker) is a chemical change.

Q. Ripening of a fruit is an example of a change.

A vehicle moving at a constant speed is an example of a change.

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