Question

WHAT IS MEANT BY 1. PHYSICAL CHANGE 2. CHEMICAL CHANGE

Answer 1

Physical Change :- Those changes in which no new substance are formed ar e called Physical Change.
Physical Change is temporary change.
A physical change is easily reversible .
Example of physical change is Melting of ice , Freezing of water , Boiling of water .
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Chemical Change :- Those changes in which new substance is formed r called chemical change.

A chemical change is permanent change.
A chemical change is usually irreversible.
Example of Chemical Change is Burning of Magnesium , Ripening of fruits , Rusting of iron .

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Answer 2

ANSWER
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PHYSICAL CHANGE

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PHYSICAL CHANGE ======= THOSE CHANGE WHICH NO NEW SUBSTANCE IS FORMED OS CALLED THE PHYSICAL CHANGE..

PHYSICAL CHANGE OS ALSO THE TEMPERORY CHANGE...

PHYSICAL CHANGE IS REALLY THE REVERSIBLE CHANGE

EX ==== MELTING OF WAX

➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️

CHEMICAL CHANGE

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CHEMICAL CHANGE = THOSE CHANGE FROM WHICH THE NEW SUBSTANCE IS FORMED IS CALLED THE CHEMICAL CHANGE....
IT IS A PERMANENT CHANGE
...

IT IS ALSO THE IN REVERSIBLE CHANGE
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EX ====* RUSTING OF IRON
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