Question

difference between physical change and chemical change ​

Answer 1

Answer:

Physical Change:

When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.

Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.

Physical change is easily reversible i.e original substance can be recovered.

Chemical Change:

When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.

A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

Chemical changes are irreversible i.e. original substance cannot be recovered

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