discuss in detail about changes around us which you have read in 7 class?
(Andhra Pradesh board)
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Revision Notes on Changes Around Us
Physical ChangeChemical ChangeUsually, physical changes are reversible in natureWhile chemical changes are often irreversibleNo new products are formed when an object undergoes physical changeChemical changes often lead to formation of new products
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NCERT Solution for Class 7 Science Chapter 6 - Changes Around Us Page/Excercise 51
S.No. Change can be reversed or not Yes/ No
1. 2. 3. 4. 5. 6. The sawing of a piece of wood The melting of ice candy Dissolving sugar in water The cooking of food The ripening of a mango Souring of milk No Yes Yes No
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