write difference between physical and chemical changes with example
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Answer:
Physical Changes are those changes in which molecular composition of substance is not changing chemically but a new substance is formed.
Example- melting of wax.
Chemical changes are those in which molecular composition of changed chemically like dissolving salt in water.
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Explanation:
carbon + oxygen — carbondioxide.
we cannot reverse carbondioxide into carbon and oxygen.while in physical change are reversible.
example. melting of wax
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