Melting of ice - Revesible change, Blowing of balloon - Reversible change, Baking of roti - Irreversible change, Rusting of iron - Irreversible change, Ammonia formation - Chemical change, Growth of a plant - Slow chane, Sun rise and sunset - natural and Periodic change, Condensation - Chande of water vapour to liquid, Water cycle - Reversible change, Burning of coal - Exothermic reaction,

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