Differentiate between:-
1) Physical and chemical change
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In a physical change, no new substance is formed. A chemical change is always accompanied by one or more new substance(s). Physical change is easily reversible i.e original substance can be recovered. Chemical changes are irreversible i.e. original substance cannot be recovered.
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physical change a change in which no new substance are formed and which can reversed the condition is called physical change for example breaking of a glass is a physical change because no new substance is formed when a glass broke
chemical change a change in which new substance are from the end which cannot be reversed by reversing the condition is called a chemical change
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