Freezing of water and evaporation of water are both physical changes.

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Solution

A physical change is a temporary and reversible change in which the physical properties of the substance change without altering the composition of the substance. Here in both processes, only the state of matter changes so they are physical changes only.

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Similar questions

Give reason:

(a)Freezing of water to ice and evaporation of water are physical changes.

(b)Burning of a candle is both a physical and a chemical change.

(c)Burning of paper is a chemical change.

(d)Cutting of a cloth piece is a physical change, though it cannot be reversed.

Which of the following are physical changes and which are chemical changes?

(a) Burning of a magnesium wire

(b) Freezing of water

(d) Glowing of an electric bulb

Some changes are given below.

(a) Freezing of water

(b) Melting of ice

(c) Boiling of water

Are these considered as physical changes? If yes, give the reason.

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