Question

write the difference between physical and chemical change​

Answer 1

Answer:

• physical change can be Nature.

Explanation:

chemical change is an thrown by human like Factory

Answer 2

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Physical change ~

(i) In a physical change, the molecules are rearranged while their actual composition remains same.

(ii) Physical change is easily reversible i.e original substance can be recovered.

(iii) Physical change is a temporary change.

(iv) Physical change involves very little to no absorption of energy.

(v) Some example of physical change are freezing of water, melting of wax, boiling of water, etc.

chemical change ~

(i) In a chemical change, the molecular composition of a substance completely changes and a new substance is formed.

(ii) Chemical change is irreversible i.e. original substance cannot be recovered.

(iii) Chemical change is a permanent change.

(iv) During chemical reaction, absorption and evolution of energy takes place.

(v) A few examples of chemical change are digestion of food, burning of coal, rusting, etc.

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