Question

what are physical changes and chemical changes​

Answer 1

Physical change:

Although some extensive properties (like shape, phase, etc.) of the material change, the material itself is the same before and after the change. The change can be “undone.”

Chemical change:

The substances present at the beginning of the change are not present at the end; new substances are formed. The change cannot be “undone.





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Answer 2

HEY MATE YOUR ANSWER TO THIS QUESTION IS HERE

PHYSICAL CHANGE :-

PHYSICAL CHANGE MEANS THE CHANGE WHICH OCCURS IN PHYSICALLY LIKE SHAPE,SIZE ETC.

EXAMPLE: - WHEN MELTING OF CANDLE

NO NEW SUBSTANCE ARE FORMED

CHEMICAL CHANGES:-

CHEMICAL CHANGES MEANS THE CHANGE WHICH OCCUR CHEMICALLY

EXAMPLE : BURNING OF PAPER INTO ASHES

NEW SUBSTANCE ARE FORMED

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