Question

Write two differences between chemical change and physical change

Answer 1

In a physical change, the molecules are rearranged while their actual composition remains same. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water, etc.

Answer 2

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CHEMICAL CHANGE-

• A change in which new substance with different properties is formed is called Chemical change.
• Example- Curdling of milk.

PHYSICAL CHANGE-

• A chance in which no new substance is formed and change broght in its physical state only is called Physical change.
• Example- Rusting of iron