When water in a pan is left out in the sun, its quantity decreases after some time.
(a) Is the decrease in quantity due to a new material being produced?
(b) Can the process occurring be reversed? Give a reason for your answer.
(c) Give an example of a reversible change.
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(a) the water is converting into water vapours, a new material is being produced
(b) yes, the process can be reverses. It can be done by condensation of water vapour
(c) heating of ice converts into water
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