Question

what is physical and chemical change??? muje smajao hindi me...​

Answer 1

Answer:

Key Points. Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

Answer 2

Explanation:

jis bastu apne pehele stage mai fir se wapas nehi jasakta usse chemical change kehetehai

e.g curd ( dahi milk se hotahai wo badme firse milk nehi bandakta )

jis bastu apne pehle stiti yafir stage Mai wapas atahai usse physical change kehetehai

e.g ( ice water se hotahai per agar hum use phir se pighlade to wo water hojatahia )

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