differentiate between chemical and physical changes give three points about them
Answers
1) Physical change refers to a change in which the molecules are rearranged but their internal composition remains same...
2) Absorption and evolution of energy do not take place...
3) No new product is formed...
CHEMICAL CHANGES:-
1) Chemical change is a process in which the substance transforms into a new substance, having different chemical composition...
2) Absorption and evolution of energy take place, during reaction...
3) New product is formed...
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Answer:-
Many changes are seen all around us in daily life, like the formation of water due to melting of ice, the formation of steam from water, the burning of bulbs and candles, the formation of curd from milk, etc. You may have seen some interesting events in these changes too, like if the vegetable stains on the clothes while eating food, then the yellow stain of turmeric becomes red after applying soap.Similarly, when you cut an apple to eat, it also turns red in a while, iron nail rusts on it, a green layer appears in the rain on the copper vessel and gives red color when green henna is formed, etc. .
Physical changes are the changes which can be prought back to its organal for again but chemail changes can be Reterived again how it was before.