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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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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Similar questions

Q. Properties of physical and chemical changes are given below. Sort the properties of physical and chemical changes in the correct column.

1. New substances are formed.
2. Precipitation is an example of this.
3. Products have new composition.
4. Composition of substance remains same.
5. It is usually permanent.
6. It is usually temporary.
7. Burning of LPG is an example of this.
8. It is reversible.

Physical change	Chemical change
1. 2. 3. 4.	5. 6. 7. 8.

Q. (a) Define the following in terms of gain or loss of hydrogen with one example each:
(i) oxidation (ii) reduction
(b) When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.

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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