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How many difference are there between physical n chemical changes n wht are they |
| Answer» \tSl. No.Differentiating PropertyPhysical ChangeChemical Change1ExplanationIn a physical change, the molecules are rearranged while their actual composition remains same.In a chemical change, the molecular composition of a substance completely changes and a new substance is formed.2ExampleSome example of physical change are freezing of water, melting of wax, boiling of water, etc.A few examples of chemical change are digestion of food, burning of coal, rusting, etc.3ReversibilityPhysical change is easily reversible i.e original substance can be recovered.Chemical change is irreversible i.e. original substance cannot be recovered.4Formation of new substanceIn physical change, no new substance is formed.A chemical change is always accompanied by one or more new substance(s).5Type of ChangePhysical change is a temporary change.Chemical change is a permanent change.\t | |