Question

differantiate between physical changes and chemical changes. support your answers with proper examples

Answer 1

Physical changes are generally reversible. eg: melting of ice, melting of wax.
Chemical changes are generally irreversible. eg: burning of wood

Answer 2

physical changes can occur manually
chemical changes occur chemically.
physical changes are reversible
chemical changes are not reversible
in physical changes, no new substance is formed
in chemical changes, new substance is formed.

eg of physical change …
drying of clothes.

eg of chemical change…
rusting of iron.

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