Directions: Read the passages given below and answer the question… - Vidyadip

MCQ

Directions: Read the passages given below and answer the questions that follow Passage Copper statues exposed to carbon dioxide and water in the air become coated with patina. The patina is not copper, it is not carbon dioxide, and not water. It is a new substance formed by the reaction of these chemicals with one another. The appearance of patina on copper statues when these are exposed to moist air is which type of change?

A
Physical change.
✓
Chemical change.
C
Periodic change.
D
Non-periodic change.

✓

Answer

Correct option: B.

Chemical change.

It is a chemical change because in it a new substance is formed.

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