Question

2. List out the day to day physical and chemical changes observed?

Answer 1

• A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
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Answer 2

Chemical Change :

A change which involves a chemical reaction and formation of new substances with new chemical properties is called Chemical Change.

Examples :

• cooking of food
• ripening of fruits
• rusting of iron objects
• tarnishing of copper articles, etc.

Physical Change :

A change in which the physical form or property changes but the chemical composition is same and there is formation of no new substances is called Physical Change.

Example :

• freezing of water
• boiling of water
• cutting of paper
• moulding of clay dough, etc.

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