Freezing of water is a:
Physical change
Chemical change
Both physical and chemical change
Exothermic reaction
Freezing of water is a physical change. The chemical composition does not change during the process.
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
(c) Rusting of iron
(d) Glowing of an electric bulb