The burning of magnesium ribbon is an example of a chemical change because-a new substance is getting formed-heat is released during this process-change in composition occursa loud sound is produced-

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Standard VII

Chemistry

Endothermic and Exothermic Changes

The burning o...

Question

The burning of magnesium ribbon is an example of a chemical change because:

a new substance is getting formed.

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heat is released during this process.

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change in composition occurs

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a loud sound is produced.

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Solution

The correct options are
A a new substance is getting formed.
B heat is released during this process.
C change in composition occurs
The burning of magnesium ribbon is a chemical change because:

- a new substance called magnesium oxide is formed
- heat energy is released.
- the composition of magnesium oxide is different from magnesium ribbon.

No loud sound is produced during this process so this cannot be reason that the given process is a chemical change.

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Q. The burning of magnesium ribbon is an example of a chemical change because:

Q. Give four reasons why burning of a magnesium ribbon in air is considered a chemical change.

Magnesium ribbon when burnt in the air forms a new compound. What is the chemical composition of the compound formed and the changes involved in the process?

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