Question

what is chemical or physical change explain it​

Answer 1

Explanation:

physical change is temporary in which no new substance is formed and can be reversed by simple physical means....example...freezing of water etc

chemical change is permanent in which orignal substance give rise to new substance having different properties and compostion . It is irreversible....example...melting of wax etc

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Answer 2

Answer-/

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Physical Changes-/

• A physical change is a change to the physical properties of a substance.

• They are usually reversible.

• Heat energy is neither absorbed nor released .

• The physical properties of a substance include such characteristics such as as shape ( volume and size ) , color, texture, flexibility , density , and mass .

Chemical changes-/

• A chemical change is a change to the chemical properties of a substance .

• They are usually irreversible .

• Heat energy is either absorbed or released .

• Chemical changes occur through the process of chemical reactions , and the resulting substances have different properties because their atoms and molecules are arranged differently .

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