Question

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

• A. a new substance is getting formed.
• B. heat is released during this process.
• C. change in composition occurs
• D. a loud sound is produced.

Answer 1

Answer: (A), (B), (C)

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.